E. O. Oladele, P. G.C. Odeigah and T. Yahaya
Journal of Biological Sciences 11 ( 4 ): 320 - 325 , 2011
T. Yahaya, J. Okpuzor and T. Ajayi
Research Journal of Medicinal Plants 6 ( 2 ): 189 - 196 , 2012