Olanzapin versus haloperidol: acute phase results of the international double-blind olanzapine trial. - Beasley,C.M.; Hamilton,S.H.; Crawford,A.M.; Dellva,M.A.; Tollefson,G.D.; Tran,P.V.; Blin,O.; Beuzen,J-N. (Euro Neuropsychopharmacol, 1997)