Murtala M. Ahmad, M.R. Odekunle, A.U. Bawa and S. Samuel
Journal of Modern Mathematics and Statistics 7 ( 3 ): 32 - 36 , 2013
K. M Saravanan, H Balasubramanian, S Nallusamy and S. Samuel
Protein Engineering, Design and Selection 23 ( 12 ): 911 - 918 , 2010