Tutorial: Abstraction in Numerical Methods. - Gerald J. Sussman; Matthew Halfant (LISP and Functional Programming, 1988)

Intelligence in Scientific Computing. - Harold Abelson; Michael Eisenberg; Matthew Halfant; Jacob Katzenelson; Elisha Sacks; Gerald J. Sussman; Jack Wisdom; Kenneth Yip (Commun. ACM, 1989)