Hans-Jörg Schek, Andreas Wolf. From Extensible Databases to Interoperability between Multiple Databases and GIS Applications. In David J. Abel, Beng Chin Ooi, editors, Advances in Spatial Databases, Third International Symposium, SSD 93, Singapore, June 23-25, 1993, Proceedings. Volume 692 of Lecture Notes in Computer Science, pages 207-238, Springer, 1993. [doi]
Abstract is missing.