@InProceedings{rolbert-prea:2009:ENLG,
  author    = {Rolbert, Monique  and  Pr{\'e}a, Pascal},
  title     = {Distinguishable Entities: Definitions and Properties},
  booktitle = {Proceedings of the 12th European Workshop on Natural Language Generation (ENLG 2009)},
  month     = {March},
  year      = {2009},
  address   = {Athens, Greece},
  publisher = {Association for Computational Linguistics},
  pages     = {34--41},
  url       = {http://www.aclweb.org/anthology/W09-0606}
}