@Book{BioNLP13:2013,
  editor    = {Kevin Bretonnel Cohen  and  Dina Demner-Fushman  and  Sophia Ananiadou  and  John Pestian  and  Jun'ichi Tsujii},
  title     = {Proceedings of the 2013 Workshop on Biomedical Natural Language Processing},
  month     = {August},
  year      = {2013},
  address   = {Sofia, Bulgaria},
  publisher = {Association for Computational Linguistics},
  url       = {http://www.aclweb.org/anthology/W13-19}
}