Heeyoung Lee Marta Recasens Angel X. Chang Mihai Surdeanu Dan Jurafsky Joint Entity and Event Coreference Resolution across Documents. 489-500 2012 EMNLP-CoNLL http://www.aclweb.org/anthology/D12-1045 conf/emnlp/2012 db/conf/emnlp/emnlp2012.html#LeeRCSJ12