Authors
M. O. Osilike
Department of Mathematics, University of Nigeria, Nsukka, Nigeria
F. O. Isiogugu
School of Mathematics, Statistics and Computer Science, University of Kwazulu-Natal, DST-NRF Centre of Excellence in Mathematical and Statistical Sciences (CoE-MaSS), University of Witwatersrand, Department of Mathematics, University of Nigeria, Presently Visiting School of Mathematics, Statistics and Computer Sciences, University of KwaZulu-Natal Westville Campus, Johannesburg
E. E. Chima
Department of Mathematics, Bingham University, Department of Mathematics, University of Nigeria, Nigeria
