A. Shoshani. Berkeley Workshop, page 183-. Technical Information Department, Lawrence Berkeley Laboratory, University of California, Berkeley CA, (1976)
L. Meo-Evoli, F. Ricci, and A. Shoshani. SSDBM, page 239-258. Institut f. Wissenschaftliches Rechnen Eidgenoessische Technische Hochschule Zürich, (1992)
A. Shoshani. PODS '97: Proceedings of the sixteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems, page 185--196. New York, NY, USA, ACM, (1997)