Prolog Instruction Set, Technical Note, SRI International Artificial Intelligence Center, D.S. Warren, S. Dietrich, F. Pereira. The SB Prolog System, SUNY at Stony Brook. Several references for this Prolog.
A study of the efficiency of various parsing techniches in Prolog, e.g. top-down, bottom-up, oracles, prediction, left-corner, chart. Also a comparison with Lisp. Examples in Prolog and Lisp.