Peter M. G. Apers Paolo Atzeni Stefano Ceri Stefano Paraboschi Kotagiri Ramamohanarao Richard T. Snodgrass VLDB 2001, Proceedings of 27th International Conference on Very Large Data Bases, September 11-14, 2001, Roma, Italy Morgan Kaufmann 2001 1-55860-804-4 db/conf/vldb/vldb2001.html