@article{DBLP:journals/jacm/HochbaumS90,
  author    = {Dorit S. Hochbaum and
               J. George Shanthikumar},
  title     = {Convex Separable Optimization Is Not Much Harder than Linear
               Optimization},
  journal   = {J. ACM},
  volume    = {37},
  number    = {4},
  year      = {1990},
  pages     = {843-862},
  ee        = {http://doi.acm.org/10.1145/96559.96597},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}