@Book{BioNLP:2011,
  editor    = {Kevin Bretonnel Cohen and Dina Demner-Fushman and Sophia Ananiadou and John Pestian and Jun'ichi Tsujii and Bonnie Webber}
  title     = {Proceedings of BioNLP 2011 Workshop},
  month     = {June},
  year      = {2011},
  address   = {Portland, Oregon, USA},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/W11-02}
}