A Simple Intelligent Interface to Data Bases on Environmental Law. - P. Guidotti; Luciano Lucchesi; Paola Mariani; Mario Ragona; Daniela Tiscornia (DEXA, 1990)

The Diritto Italia Project to Search for Legal Information on the Internet. - Mario Ragona; Loriana Serrotti; Fiorenza Socci; Pier-Luigi Spinosa (DEXA Workshop, 1999)