A Company/University Joint Venture to Build a Knowledge-Based System. - John R. Weitzel; Kenneth R. Andrews (MIS Q., 1988)

Developing Knowledge-Based Systems: Reorganizing the System Development Life Cycle. - John R. Weitzel; Larry Kerschberg (Commun. ACM, 1989)

A system development methodology for knowledge-based systems. - John R. Weitzel; Larry Kerschberg (IEEE Trans. Syst. Man Cybern., 1989)