White Paper on Natural Language Processing. - Ralph Weiscbedel; Jaime G. Carbonell; Barbara J. Grosz; Wendy Lehnert; Mitchell Marcus; Ray Perrault; Robert Wilensky (HLT (2), 1989)

In Memoriam: Charles Rosen, Norman Nielsen, and Saul Amarel. - Peter E. Hart; Nils J. Nilsson; Ray Perrault; Tom M. Mitchell; Casimir A. Kulikowski (AI Mag., 2003)