Stanford's Generalized Database System. - J. R. Schroeder; W. C. Kiefer; Richard L. Guertin; William J. Berman (VLDB, 1975)

Automatic generation of database definitions for an information retrieval system. - William J. Berman (1976)

Partial-Match Retrieval Using Indexed Descriptor Files. - John L. Pfaltz; William J. Berman; Edgar M. Cagley (Commun. ACM, 1980)