A Procedure for Quantitatively Comparing the Syntactic Coverage of English Grammars. - Ezra Black; Steven P. Abney; D. Flickenger; Claudia Gdaniec; Ralph Grishman; P. Harrison; Donald Hindle; Robert Ingria; Frederick Jelinek; Judith L. Klavans; Mark Y. Liberman; Mitchell P. Marcus; et al. (HLT, 1991)