Different effects of GABAergic receptors located in the ventral tegmental area on the expression of morphine-induced conditioned place preference in rat - Sahraei, Hedayat; Amiri, Yar-Ali; Haeri-Rohani, Ali; Sepehri, Houri; Salimi, Seyed Hossein; Pourmotabbed, Ali; Ghoshooni, Hassan; Zahirodin, Ali; Zardooz, Homeira (European Journal of Pharmacology, 2005)