Hochbaum04'

@article{DBLP:journals/orl/Hochbaum04,
  author    = {Dorit S. Hochbaum},
  title     = {Monotonizing linear programs with up to two nonzeroes per
               column},
  journal   = {Oper. Res. Lett.},
  volume    = {32},
  number    = {1},
  year      = {2004},
  pages     = {49-58},
  ee        = {http://dx.doi.org/10.1016/S0167-6377(03)00074-9},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}