00338    a2200097   4500001001000000005001700010008004100027245007900068100002100147773007200168ART_2806720260410161951.0260409a                                 10aProduct differentiation and market power in the California gasoline market1 aColoma, Germán0 tJournal of applied economicsg- Vol. 2, Nº 1 (mayo 1999)wREV28044