Dada, M. O. , Department of Physics, Federal University of Technology, Minna, Niger State, Nigeria.
Danbaba, U. A. , Department of Planning and Policy Analysis, National Agency for Science and Engineering Infrastructure, Abuja.
Danjuma , T., Department of Mathematical Sciences, Federal University Gusau, P.M.B. 1001,Gusau. Zamfara State, Nigeria.
Davies, I. , Department of Mathematics, Rivers State University Orowurukwo, Port Harcourt, Nigeria.
Didigwu, Ndidiamaka Edith, Department of Mathematics, Enugu State University of Science and Technology, Nigeria
Durojaye, M. O. , Department of Mathematics, University of Abuja, Abuja Nigeria
Dzarma, A. G. , Nigerian Army University Biu, Borno, State, Nigeria

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