Towards History-Based Grammars: Using Richer Models for Probabilistic Parsing.

Ezra Black Frederick Jelinek John D. Lafferty David M. Magerman Robert L. Mercer Salim Roukos Towards History-Based Grammars: Using Richer Models for Probabilistic Parsing. 31-37 1993 ACL db/conf/acl/acl93.html#BlackJLMMR93