The acquisition, verification, and explanation of design knowledge. - Charles Kellogg; Robert A. Gargan Jr.; William S. Mark; James McGuire; Michael Pontecorvo; Jon Schlossberg; Joseph W. Sullivan; Michael R. Genesereth; Narinder Singh (SIGART Newsl., 1989)

Lingua Graphica: A Visual Language for Virtual Environments. - Randy Stiles; Michael Pontecorvo (VL, 1992)