M. Zakariah, A. Yahaya, M. Sonfada, and I. Wiam, “Male organs of African catfish (<i>Clarias gariepinus</i>) in spawning and non-spawning periods in Maiduguri, Borno State, Nigeria”, Sokoto J. Vet. Sc., vol. 14, no. 1, pp. 34–38, May 2016.