@inproceedings{Ragone07a, Author = {Azzurra Ragone and Umberto Straccia and Tommaso Di Noia and Eugenio Di Sciascio and Francesco M. Donini}, Booktitle = {15th Italian Symposium on Advanced Database Systems (SEBD-07)}, Editor = {Michelangelo Ceci and Donato Malerba and Letizia Tanca}, Pages = {463--470}, Title = {Extending Datalog for Matchmaking in P2P E-Marketplaces}, Year = {2007}}