@Book{ILPNLP:2009,
  editor    = {James Clarke  and  Sebastian Riedel},
  title     = {Proceedings of the Workshop on Integer Linear Programming for Natural Language Processing},
  month     = {June},
  year      = {2009},
  address   = {Boulder, Colorado},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/W09-18}
}