S.A. Habibullah, L.S. Bilbis, M.J. Ladan, O.P. Ajagbonna and Y. Saidu
Asian Journal of Biochemistry 2 ( 1 ): 42 - 49 , 2007
E.U. Etuk, V. Igbokwe, O.P. Ajagbonna and M.O. Egua
Research Journal of Medicinal Plants 3 ( 2 ): 52 - 60 , 2009