@article{DBLP:journals/eor/ParkL07,
  author    = {Timothy A. Park and
               Luanne Lohr},
  title     = {Performance evaluation of university extension providers:
               A frontier approach for ordered response data},
  journal   = {European Journal of Operational Research},
  volume    = {182},
  number    = {2},
  year      = {2007},
  pages     = {899-910},
  ee        = {http://dx.doi.org/10.1016/j.ejor.2006.07.018},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}