@Article{McClosky:12,
  author    = {David McClosky and Sebastian Riedel and Mihai Surdeanu and Andrew McCallum and Christopher D. Manning},
  title     = {Combining Joint Models for Biomedical Event Extraction},
  journal = {BMC Bioinformatics},
  volume = {13(Suppl 11)},
  number = {S9},
  year      = {2012},
}