Working Group Sessions. - Petros Bofakos; Moira C. Norrie (Specifications of Database Systems, 1992)

A Canonical Model for a Class of Areal Spatial Objects. - Michael F. Worboys; Petros Bofakos (SSD, 1993)

An object-oriented approach to geo-referenced data modelling. - Petros Bofakos (1994)