Guibourtia tessmannii-induced fictive ejaculation in spinal male rat: involvement of D1, D2-like receptors oleh Patrick Brice Deeh Defo, Elvis Asongu, Modeste Nya Wankeu, Esther Ngadjui, Georges Romeo Bonsou Fazin, François Xavier Kemka, Miguel Carro-Juarez, Albert Kamanyi, Pierre Kamtchouing, Pierre Watcho