Alessandro Artale, Jean Paul Ballerini, Filippo Cacace, Stefano Ceri, Francesca Cesarini, Anna Formica, Herman Lam, Sergio Greco, G. Marrella, Michele Missikoff, Luigi Palopoli, L. Pichetti, Domenico Saccà, Silvio Salza, Claudio Sartori, Giovanni Soda, Letizia Tanca, M. Toiati. Prototypes in the LOGIDATA+ Project. In Paolo Atzeni, editor, LOGIDATA+: Deductive Databases with Complex Objects. Volume 701 of Lecture Notes in Computer Science, pages 252-273, Springer, 1993.
Abstract is missing.