Version Modeling Concepts for Computer-Aided Design Databases. - Randy H. Katz; Ellis E. Chang; Rajiv Bhateja (SIGMOD Conference, 1986)

VALKYRIE: A Validation Subsystem of a Version Server for Computer-Aided Design Data. - Rajiv Bhateja; Randy H. Katz (DAC, 1987)

Design Version Management. - Randy H. Katz; Rajiv Bhateja; Ellis E. Chang; David Gedye; Vony Trijanto (IEEE Des. Test, 1987)