Sitters01'

@inproceedings{DBLP:conf/ipco/Sitters01,
  author    = {Ren{\'e} Sitters},
  title     = {Two NP-Hardness Results for Preemptive Minsum Scheduling
               of Unrelated Parallel Machines},
  booktitle = {IPCO},
  year      = {2001},
  pages     = {396-405},
  ee        = {http://dx.doi.org/10.1007/3-540-45535-3_31},
  crossref  = {DBLP:conf/ipco/2001},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/ipco/2001,
  editor    = {Karen Aardal and
               Bert Gerards},
  title     = {Integer Programming and Combinatorial Optimization, 8th
               International IPCO Conference, Utrecht, The Netherlands,
               June 13-15, 2001, Proceedings},
  booktitle = {IPCO},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {2081},
  year      = {2001},
  isbn      = {3-540-42225-0},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}