The Authorizer's Assistant: A Knowledge-Based Credit Authorization System for American Express. - James Dzierzanowski; Kenneth R. Chrisman; Gary MacKinnon; Philip Klahr (IAAI, 1989)

AES: SunAmerica's Appointment Expert System. - Richard M. Levine; Gary MacKinnon; Frank Angrisani; Lew Roth (IAAI, 1991)