Volume 61, Number 1, January 2010

• 
  Terry Williams, John Wilson, Susan Merchant: 60th Anniversary JORS - introduction. 1-3

• 
  K. Brian Haley: The challenge of publications. 4-10
• 
  R. S. Stainton: OR - a personal perspective. 11-13
• 
  Michael Pidd: Why modelling and model use matter. 14-24
• 
  R. G. Dyson, E. A. Shale: Data envelopment analysis, operational research and uncertainty. 25-34
• 
  Gilbert Laporte: A concise guide to the Traveling Salesman Problem. 35-40
• 
  L. C. Thomas: Consumer finance: challenges for operational research. 41-52
• 
  Manuel Laguna, Julián Molina Luque, Fatima Perez, Rafael Caballero, Alfredo García Hernández-Díaz: The challenge of optimizing expensive black boxes: a scatter search/rough set theory approach. 53-67
• 
  Maurice W. Kirby, M. T. Godwin: The 'invisible science': operational research for the British Armed Forces after 1945. 68-81
• 
  Korina Katsaliaki, Navonil Mustafee, Yogesh Kumar Dwivedi, T. Williams, J. M. Wilson: A profile of OR research and practice published in the Journal of the Operational Research Society. 82-94

• 
  M.-K. Kang, C.-S. Jang, K.-S. Yoon: Heuristics with a new block strategy for the single and multiple containers loading problems. 95-107
• 
  V. S. Tonaki, Franklina Maria Bragion Toledo: An approach for solving the lot-sizing problem of a market-driven foundry. 108-114
• 
  Nima Sanajian, Hossein Abouee-Mehrizi, Baris Balcioglu: Scheduling policies in the M/G/1 make-to-stock queue. 115-123
• 
  Gregory Levitin, Kjell Hausken: Defence and attack of systems with variable attacker system structure detection probability. 124-133
• 
  K. F. Lam: In the determination of weight sets to compute cross-efficiency ratios in DEA. 134-143
• 
  Y. H. Kang, S. S. Kim, H. J. Shin: A dispatching algorithm for parallel machines with rework processes. 144-155
• 
  B. Desmet, El Houssaine Aghezzaf, Hendrik Vanmaele: A normal approximation model for safety stock optimization in a two-echelon distribution system. 156-163
• 
  José D. Bermúdez, José Vicente Segura, Enriqueta Vercher: Bayesian forecasting with the Holt-Winters model. 164-171

• 
  J.-B. Wang: Single-machine scheduling with a sum-of-actual-processing-time-based learning effect. 172-177

Volume 61, Number 2, February 2010

• 
  Desheng Wu, David L. Olson: Enterprise risk management: coping with model risk in a large bank. 179-190
• 
  T. Sloan: First, do no harm? A framework for evaluating new versus reprocessed medical devices. 191-201
• 
  A. Schellekens, Fred Paas, Alexander Verbraeck, Jeroen J. G. van Merriënboer: Designing a flexible approach for higher professional education by means of simulation modelling. 202-210
• 
  S. J. Ho, S. K. Mallick: The impact of information technology on the banking industry. 211-221
• 
  K. De Witte, E. Dijkgraaf: Mean and bold? On separating merger economies from structural efficiency gains in the drinking water sector. 222-234
• 
  Antonio J. Conejo, Francisco J. Nogales, M. Carrión, Juan M. Morales: Electricity pool prices: long-term uncertainty characterization for futures-market trading and risk management. 235-245
• 
  J. Bowers: Waiting list behaviour and the consequences for NHS targets. 246-254
• 
  M. Maliapen, B. C. Dangerfield: A system dynamics-based simulation study for managing clinical governance and pathways in a hospital. 255-264
• 
  P. G. Hancock, R. Raeside: Analysing communication in a complex service process: an application of social network analysis in the Scottish Prison Service. 265-274
• 
  E. D. Günes, H. Yaman: Health network mergers and hospital re-planning. 275-283
• 
  George Baltas, C. Saridakis: Measuring brand equity in the car market: a hedonic price analysis. 284-293

• 
  Thomas W. Archibald, D. P. Black, Kevin D. Glazebrook: The use of simple calibrations of individual locations in making transshipment decisions in a multi-location inventory network. 294-305
• 
  Ernesto G. Birgin, Rafael D. Lobato, Reinaldo Morabito: An effective recursive partitioning approach for the packing of identical rectangles in a rectangle. 306-320
• 
  Albert Corominas, Jordi Olivella, Rafael Pastor: Capacity planning with working time accounts in services. 321-331
• 
  N. Iswaran, David F. Percy: Conflict analysis using Bayesian neural networks and generalized linear models. 332-341
• 
  George C. Hadjinicola: Manufacturing costs in serial production systems with rework. 342-351

• 
  W.-H. Kuo, D.-L. Yang: Single-machine scheduling with a sum-of-actual-processing-time-based learning effect. 352-355
• 
  J.-B. Wang: Response to Viewpoint on 'Single-machine with a sum-of-actual-processing-time-based learning effect'. 355

Volume 61, Number 3, March 2010

• 
  Lyn C. Thomas, Jonathan N. Crook, David Edelman: Editorial. 357-358
• 
  G. Castermans, David Martens, Tony Van Gestel, B. Hamers, Bart Baesens: An overview and framework for PD backtesting and benchmarking. 359-373
• 
  S. Ingolfsson, B. T. Elvarsson: Cyclical adjustment of point-in-time PD. 374-380
• 
  P. Beling, G. Overstreet, K. Rajaratnam: Estimation error in regulatory capital requirements: theoretical implications for consumer bank profitability. 381-392
• 
  Ania Matuszyk, Christophe Mues, Lyn C. Thomas: Modelling LGD for unsecured personal loans: decision tree approach. 393-398
• 
  J. L. Breeden, D. Ingram: Monte Carlo scenario generation for retail loan portfolios. 399-410
• 
  M. Malik, Lyn C. Thomas: Modelling credit risk of portfolio of consumer loans. 411-420
• 
  K. Rajaratnam, P. Beling, G. Overstreet: Scoring decisions in the context of economic uncertainty. 421-429
• 
  P. Ma, Jonathan Crook, Jake Ansell: Modelling take-up and profitability. 430-442
• 
  Hsin-Vonn Seow: Question selection responding to information on customers from heterogeneous populations to select offers that maximize expected profit. 443-454
• 
  L. Quirini, L. Vannucci: A new index of creditworthiness for retail credit products. 455-461
• 
  Adam R. Brentnall, Martin Crowder, David J. Hand: Likelihood-ratio changepoint features for consumer-behaviour models. 462-472
• 
  John Banasik, Jonathan Crook: Reject inference in survival analysis by augmentation. 473-485
• 
  Raquel Flórez López: Effects of missing data in credit risk scoring. A comparative analysis of methods to achieve robustness in the absence of sufficient data. 486-501

• 
  Tolga Bektas, Gilbert Laporte: Editorial. 502
• 
  Elena Fernández, Jörg Kalcsics, Stefan Nickel, Roger Z. Ríos-Mercado: A novel maximum dispersion territory design model arising in the implementation of the WEEE-directive. 503-514
• 
  Will Maden, Richard W. Eglese, Dan Black: Vehicle routing and scheduling with time-varying data: A case study. 515-522
• 
  Kjetil Fagerholt, Gilbert Laporte, I. Norstad: Reducing fuel emissions by optimizing speed on shipping routes. 523-529
• 
  J. Bauer, Tolga Bektas, Teodor Gabriel Crainic: Minimizing greenhouse gas emissions in intermodal freight transport: an application to rail service design. 530-542

Volume 61, Number 4, April 2010

• 
  Günes Erdogan, Erhan Erkut, Armann Ingolfsson, Gilbert Laporte: Scheduling ambulance crews for maximum coverage. 543-550
• 
  Lap Keung Chu, Yuan Shi, S. Lin, Domenic Sculli, Jian Ni: Fuzzy chance-constrained programming model for a multi-echelon reverse logistics network for household appliances. 551-560
• 
  David Martens, Tony Van Gestel, Manu De Backer, Raf Haesen, Jan Vanthienen, Bart Baesens: Credit rating prediction using Ant Colony Optimization. 561-573
• 
  J. M. Cordero-Ferrera, F. Pedraja-Chaparro, D. Santín-González: Enhancing the inclusion of non-discretionary inputs in DEA. 574-584
• 
  G. Dutta, S. Basu, J. John: Development of utility function for life insurance buyers in the Indian market. 585-593

• 
  Jarl Eirik Korsvik, Kjetil Fagerholt, Gilbert Laporte: A tabu search heuristic for ship routing and scheduling. 594-603
• 
  Majid Zohrehbandian, A. Makui, Alireza Alinezhad: A compromise solution approach for finding common weights in DEA: an improvement to Kao and Hung's approach. 604-610
• 
  Z. C. Zhu, K. M. Ng, H. L. Ong: A modified tabu search algorithm for cost-based job shop problem. 611-619
• 
  Jorge M. S. Valente: Beam search heuristics for quadratic earliness and tardiness scheduling. 620-631
• 
  Alan Jessop: A portfolio model for performance assessment: the Financial Times MBA ranking. 632-639
• 
  R.-H. Huang, C.-L. Yang, H.-T. Huang: Parallel machine scheduling with common due windows. 640-646
• 
  J.-L. Hu, C.-Y. Fang: Do market share and efficiency matter for each other? An application of the zero-sum gains data envelopment analysis. 647-657
• 
  A. Wong, Erhan Kozan: Optimization of container process at seaport terminals. 658-665
• 
  Tae Hee Moon, So Young Sohn: Technology credit scoring model considering both SME characteristics and economic conditions: The Korean case. 666-675
• 
  A. Baykal Hafizoglu, Meral Azizoglu: Linear programming based approaches for the discrete time/cost trade-off problem in project networks. 676-685
• 
  Enrico Angelelli, Nicola Bianchessi, Renata Mansini, Maria Grazia Speranza: Comparison of policies in dynamic routing problems. 686-695
• 
  S. Banerjee, N. S. Meitei: Effect of declining selling price: profit analysis for a single period inventory model with stochastic demand and lead time. 696-704

• 
  Richard J. Ormerod: Research contribution: Citation and content analysis. 705-707

Volume 61, Number 5, May 2010

• 
  J. M. Wilson: Russell L Ackoff. 713

• 
  G. A. Hindle, A. Hindle: Developing geographical indicators of mileage-related costs: a case study exploring travelling public services in English local areas. 714-722
• 
  Ahmed Ghoniem, Hanif D. Sherali: Models and algorithms for the scheduling of a doubles tennis training tournament. 723-731
• 
  N. Beaumont: Using dynamic programming to determine an optimal strategy in a contract bridge tournament. 732-739
• 
  Jerónimo Aznar, Javier Ferrís-Oñate, Francisco Guijarro: An ANP framework for property pricing combining quantitative and qualitative attributes. 740-755
• 
  D. B. O'Brien, Cathal M. Brugha: Adapting and refining in multi-criteria decision-making. 756-767
• 
  Paul R. Harper, N. H. Powell, Janet E. Williams: Modelling the size and skill-mix of hospital nursing teams. 768-779

• 
  H. Zhang, H. I. Mesak: Optimal multi-period service capacity allocation and pricing allowing for uncertain competitive entry. 780-789
• 
  Kristin Sahyouni, R. Canan Savaskan, Mark S. Daskin: The effect of lifetime buys on warranty repair operations. 790-803
• 
  Konstantinos Falangis, J. J. Glen: Heuristics for feature selection in mathematical programming discriminant analysis models. 804-812
• 
  K. Sheibani: A fuzzy greedy heuristic for permutation flow-shop scheduling. 813-818
• 
  Matthieu Plumettaz, David Schindl, Nicolas Zufferey: Ant Local Search and its efficient adaptation to graph colouring. 819-826
• 
  R. Bhatnagar, V. Saddikuti: Models for cellular manufacturing systems design: matching processing requirements and operator capabilities. 827-839
• 
  G. Tang, F. Chen, T. C. Edwin Cheng, C. T. Daniel Ng, Zhi-Long Chen: The loader problem: formulation, complexity and algorithms. 840-848
• 
  Alex J. Ruiz-Torres, Francisco J. López, P. J. Wojciechowski, Johnny C. Ho: Parallel machine scheduling problems considering regular measures of performance and machine cost. 849-857
• 
  D. J. Meade, S. Kumar, B. White: Analysing the impact of the implementation of lean manufacturing strategies on profitability. 858-871
• 
  Selin Özpeynirci, Meral Azizoglu: A Lagrangean relaxation based approach for the capacity allocation problem in flexible manufacturing systems. 872-877

• 
  Zvi Drezner, Atsuo Suzuki: Covering continuous demand in the plane. 878-881
• 
  Gur Mosheiov, Jeffrey B. Sidney: Scheduling a deteriorating maintenance activity on a single machine. 882-887

Volume 61, Number 6, June 2010

• 
  E. D. Love, C. M. Tam: Special issue on operational research in project management: pragmatic solutions for real life problems. 891-892

• 
  J. Davis, A. MacDonald, L. White: Problem-structuring methods and project management: an example of stakeholder involvement using Hierarchical Process Modelling methodology. 893-904
• 
  J. P. Pastor-Ferrando, Pablo Aragonés-Beltrán, A. Hospitaler-Pérez, Mónica García-Melón: An ANP- and AHP-based approach for weighting criteria in public works bidding. 905-916
• 
  Zahir Irani: Investment evaluation within project management: an information systems perspective. 917-928
• 
  Amir M. Sharif, Zahir Irani, V. Weerakkoddy: Evaluating and modelling constructs for e-government decision making. 929-952

• 
  L. Houghton, M. Metcalfe: Synthesis as conception shifting. 953-963
• 
  A. J. Higgins, C. J. Miller, A. A. Archer, T. Ton, C. S. Fletcher, R. R. J. McAllister: Challenges of operations research practice in agricultural value chains. 964-973

• 
  So Young Sohn, Kyung Bok Yoon: Dynamic preventive maintenance scheduling of the modules of fighter aircraft based on random effects regression model. 974-979
• 
  J. M. Norman, S. R. Clarke: Optimal batting orders in cricket. 980-986
• 
  Brian Boffey, Roberto D. Galvão, V. Marianov: Location of single-server immobile facilities subject to a loss constraint. 987-999

• 
  Yavuz Bogaç Türkogullari, Necati Aras, I. Kuban Altinel, Cem Ersoy: Optimal placement, scheduling, and routing to maximize lifetime in sensor networks. 1000-1012
• 
  Jinxiang Gu, Marc Goetschalckx, Leon F. McGinnis: Solving the forward-reserve allocation problem in warehouse order picking systems. 1013-1021
• 
  Uri Benzion, Y. Cohen, Tal Shavit: The newsvendor problem with unknown distribution. 1022-1031
• 
  D. Bai, L. Tang: New heuristics for flow shop problem to minimize makespan. 1032-1040
• 
  Adam Janiak, Radoslaw Rudek: Scheduling jobs under an aging effect. 1041-1048

• 
  M. Parzen, S. Lipsitz, R. Metters, G. Fitzmaurice: Correlation when data are missing. 1049-1056
• 
  S. Bandyopadhyay, S. Bandyopadhyay: A stylized model of 'Momentum' processes: a research note. 1057-1062

• 
  I. Castillo, T. Sim: A spring-embedding approach for the facility layout problem. 1063

Volume 61, Number 7, July 2010

• 
  John Wilson: Changes in editorial team. 1071

• 
  Roberto Baldacci, Enrico Bartolini, Gilbert Laporte: Some applications of the generalized vehicle routing problem. 1072-1077
• 
  Richard J. Ormerod: Articulate intervention revisited. 1078-1094

• 
  Ciro-Alberto Amaya, André Langevin, Martin Trépanier: A heuristic method for the capacitated arc routing problem with refill points and multiple loads. 1095-1103
• 
  M. Lezaun, G. Pérez, E. Sáinz de la Maza: Staff rostering for the station personnel of a railway company. 1104-1111
• 
  Q. Feng, J. Antony: Integrating DEA into Six Sigma methodology for measuring health service efficiency. 1112-1121
• 
  Maria Conceição A. Silva Portela, A. S. Camanho: Analysis of complementary methodologies for the estimation of school value added. 1122-1132
• 
  Andreas T. Ernst, Mark E. T. Horn, Philip Kilby, Mohan Krishnamoorthy: Dynamic scheduling of recreational rental vehicles with revenue management extensions. 1133-1143

• 
  Gholam R. Amin, Ali Emrouznejad: Finding relevant search engines results: a minimax linear programming approach. 1144-1150
• 
  Bibhas Chandra Giri, Tadashi Dohi: Quantifying the risk in age and block replacement policies. 1151-1158
• 
  Anjali Awasthi, Satyaveer Singh Chauhan, Michel Parent, Jean-Marie Proth: Algorithms for partitioning of large routing networks. 1159-1167
• 
  Massimiliano Caramia, Francesca Guerriero: A heuristic approach for the truck and trailer routing problem. 1168-1180
• 
  Feng Jin, Jatinder N. D. Gupta, Shiji Song, Cheng Wu: Single machine scheduling with sequence-dependent family setups to minimize maximum lateness. 1181-1189

Volume 61, Number 8, August 2010

• 
  Peter Naudé, Stephan Henneberg, Z. Jiang: Varying routes to the top: identifying different strategies in the MBA marketplace. 1193-1206
• 
  Richard J. Ormerod: Rational inference: deductive, inductive and probabilistic thinking. 1207-1223

• 
  K. De Witte, Emmanuel Thanassoulis, G. Simpson, G. Battisti, A. Charlesworth-May: Assessing pupil and school performance by non-parametric and parametric techniques. 1224-1237
• 
  Reda M. Lebcir, Rifat A. Atun, Richard J. Coker: System Dynamic simulation of treatment policies to address colliding epidemics of tuberculosis, drug resistant tuberculosis and injecting drug users driven HIV in Russia. 1238-1248
• 
  G.-T. Yeo, D.-W. Song, J. Dinwoodie, M. Roe: Weighting the competitiveness factors for container ports under conflicting interests. 1249-1257

• 
  Ying-Mei Tu, Hsin-Nan Chen: Capacity planning with sequential time constraints under various control policies in the back-end of wafer fabrications. 1258-1264
• 
  Ross A. Malaga, Dawn Porter, K. Ord, Bonnie Montano: A new end-of-auction model for curbing sniping. 1265-1272
• 
  Panagiotis Xidonas, George Mavrotas, John E. Psarras: A multiple criteria decision-making approach for the selection of stocks. 1273-1287
• 
  Virginie Gabrel, Céline Murat: Robustness and duality in linear programming. 1288-1296

• 
  Jean-Philippe Boussemart, Walter Briec, Hervé Leleu: Linear programming solutions and distance functions under alpha-returns to scale. 1297-1301
• 
  Y. Malevergne, B. Rey: Preserving preference rankings under non-financial background risk. 1302-1308
• 
  Albert Corominas, Alberto García-Villoria, Rafael Pastor: Fine-tuning a parametric Clarke and Wright heuristic by means of EAGH (empirically adjusted greedy heuristics). 1309-1314

Volume 61, Number 9, September 2010

• 
  M. S. Sodhi, B.-G. Son: Content analysis of OR job advertisements to infer required skills. 1315-1327

• 
  B. Cobacho, Rafael Caballero, Mercedes González, Julián Molina: Planning federal public investment in Mexico using multiobjective decision making. 1328-1339

• 
  Xiangyong Li, Yash P. Aneja, Md. Fazle Baki: An ant colony optimization metaheuristic for single-path multicommodity network flow problems. 1340-1355
• 
  Ulrich Derigs, B. Li, Ulrich Vogel: Local search-based metaheuristics for the split delivery vehicle routing problem. 1356-1364
• 
  Y. H. Yang, Yer Van Hui, Lawrence C. Leung, G. Chen: An analytic network process approach to the selection of logistics service providers for air cargo. 1365-1376
• 
  Carlos Serrano-Cinca, Yolanda Fuertes-Callén, Cecilio Mar-Molinero: A structural model for sales in the e-retailing industry. 1377-1388
• 
  Kathryn Hoad, Stewart Robinson, Ruth Davies: Automating warm-up length estimation. 1389-1403
• 
  S. A. Gabriel, Y. Shim, Antonio J. Conejo, S. de la Torre, Raquel García-Bertrand: A Benders decomposition method for discretely-constrained mathematical programs with equilibrium constraints. 1404-1419
• 
  D. Champion, J. M. Wilson: The impact of contingency factors on validation of problem structuring methods. 1420-1431

Volume 61, Number 10, October 2010

• 
  M. Smits: Impact of policy and process design on the performance of intake and treatment processes in mental health care: a system dynamics case study. 1437-1445
• 
  Tamrat W. Tewoldeberhan, Alexander Verbraeck, V. Hlupic: Implementing a discrete-event simulation software selection methodology for supporting decision making at Accenture. 1446-1458
• 
  Madjid Tavana, Mariya A. Sodenkamp: A fuzzy multi-criteria decision analysis model for advanced technology assessment at Kennedy Space Center. 1459-1470

• 
  Philip G. Brabazon, Bart L. MacCarthy: On Markovian approximations for virtual-build-to-order systems. 1471-1484
• 
  Sebastián Lozano, Gabriel Villa: DEA-based pre-merger planning tool. 1485-1497
• 
  Yuvraj Gajpal, Prakash L. Abad: Saving-based algorithms for vehicle routing problem with simultaneous pickup and delivery. 1498-1509
• 
  L. Zhang, A. Wirth: Wind energy management with battery storage. 1510-1522
• 
  H.-Y. Tsao, L. Pitt, C. Campbell: Analysing consumer segments to budget for loyalty and promotion programmes and maximize market share. 1523-1529
• 
  A. K. Suzuki, L. E. B. Salasar, J. G. Leite, Francisco Louzada-Neto: A Bayesian approach for predicting match outcomes: The 2006 (Association) Football World Cup. 1530-1539
• 
  D. J. Hand, F. Zhou: Evaluating models for classifying customers in retail banking collections. 1540-1547
• 
  D. T. Barnum, J. M. Gleason, B. Hemily, J. Lin, P. Wang: Progressing from uncertainty to risk for DEA-based decisions. 1548-1555

• 
  Jean-François Audy, Sophie D'Amours, L.-M. Rousseau: Cost allocation in the establishment of a collaborative transportation agreement - an application in the furniture industry. 1559

Volume 61, Number 11, November 2010

• 
  John Medhurst, I. M. Stanton, A. Berry: Risk taking by decision makers - using card-based decision gaming to develop models of behaviour. 1561-1571
• 
  S. Vanderby, M. W. Carter: An evaluation of the applicability of system dynamics to patient flow modelling. 1572-1581

• 
  M. Büther: Reducing the elastic generalized assignment problem to the standard generalized assignment problem. 1582-1595
• 
  Barry R. Cobb, John M. Charnes: A graphical method for valuing switching options. 1596-1606
• 
  Ching-Hui Tang: A network model for airport common use check-in counter assignments. 1607-1618
• 
  S. Salhi, A. Al-Khedhairi: Integrating heuristic information into exact methods: The case of the vertex p-centre problem. 1619-1631
• 
  Kathryn Hoad, Stewart Robinson, Ruth Davies: Automated selection of the number of replications for a discrete-event simulation. 1632-1644
• 
  W. K. Chiang, Y. Feng: Retailer or e-tailer? Strategic pricing and economic-lot-size decisions in a competitive supply chain with drop-shipping. 1645-1653
• 
  Z. X. Chen, B. R. Sarker: Multi-vendor integrated procurement-production system under shared transportation and just-in-time delivery system. 1654-1666
• 
  Edmund K. Burke, Timothy Curtois, Rong Qu, Greet Vanden Berghe: A scatter search methodology for the nurse rostering problem. 1667-1679

Volume 61, Number 12, December 2010

• 
  S. Robinson, R. Davies: An investigation of the effect of educational background on performance in simulation studies. 1685-1693
• 
  Richard J. Ormerod: Justifying the methods of OR. 1694-1708

• 
  Suja Sivadasan, Janet Smart, Luisa Huaccho Huatuco, Ani Calinescu: Operational complexity and supplier-customer integration: case study insights and complexity rebound. 1709-1718
• 
  Sofie Coene, A. Arnout, Frits C. R. Spieksma: On a periodic vehicle routing problem. 1719-1728

• 
  C. Murillo-Melchor, J. M. Pastor, Emili Tortosa-Ausina: A bootstrap approach to analyse productivity growth in European banking. 1729-1745
• 
  U. Dinesh Kumar, A. B. Roy, Haritha Saranga, K. Singal: Analysis of hedge fund strategies using slack-based DEA models. 1746-1760
• 
  Richard J. Ormerod: OR as rational choice: a decision and game theory perspective. 1761-1776
• 
  H. Saranga, R. D. Banker: Productivity and technical changes in the Indian pharmaceutical industry. 1777-1788

• 
  M. Khalili, A. S. Camanho, M. C. A. S. Portela, M. R. Alirezaee: An improvement on the Tracy and Chen model 'A generalized model for weight restrictions in DEA'. 1789-1793

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