An Object-Oriented Database System to Support an Integrated Programming Environment. - Daniel Weinreb; Neal Feinberg; Dan Gerson; Charles Lamb (IEEE Data Eng. Bull., 1988)

Athena Univ. - VOU and GENII: A Model of Conceptual Change and Collaboration. - George Duckett; William Painter Jr.; Marty Gay; Dan Gerson; Terry Lee Moore; Katherine B. Wallet (CSCL, 1995)