Asuman Dogac Ilker Durusoy Sena Nural Arpinar Esin Gokkoca Nesime Tatbul Pinar Koksal METU-Emar: An Agent-Based Electronic Marketplace on the Web. 777-790 http://link.springer.de/link/service/series/0558/bibs/1513/15130777.htm 1998 conf/ercimdl/1998 ECDL db/conf/ercimdl/ercimdl98.html#DogacDAGTK98