@InProceedings{lin-kan-ng:2009:EMNLP,
  author    = {Lin, Ziheng  and  Kan, Min-Yen  and  Ng, Hwee Tou},
  title     = {Recognizing Implicit Discourse Relations in the {Penn Discourse Treebank}},
  booktitle = {Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing},
  month     = {August},
  year      = {2009},
  address   = {Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {343--351},
  url       = {http://www.aclweb.org/anthology/D/D09/D09-1036}
}