Evaluation of perospirone (SM-9018), a novel serotonin-2 and dopamine-2 receptor antagonist and other antipsychotics in the conditioned fear stress-induced freezing behavior model in rats - Ishida-Tokuda,K.; Ohno,Y.; Sakamoto,H.; Ishibashi,T.; Wakabayashi,J.; Tojima,R.; Morita,T.; Nakamura,M. (Jpn J Pharmacol, 1996)