Definite Clause Grammars for Language Analysis - A Survey of the Formalism and a Comparison with Augmented Transition Networks.

Fernando C. N. Pereira David H. D. Warren Definite Clause Grammars for Language Analysis - A Survey of the Formalism and a Comparison with Augmented Transition Networks. 231-278 1980 13 Artif. Intell. 3 db/journals/ai/ai13.html#PereiraW80a