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Autor:
Okeke GA; Department of Mathematics, School of Physical Sciences, Federal University of Technology Owerri, P.M.B. 1526 Owerri, Imo State, Nigeria., Francis D; Department of Mathematics, School of Physical Sciences, Federal University of Technology Owerri, P.M.B. 1526 Owerri, Imo State, Nigeria., de la Sen M; Institute of Research and Development of Processes, University of the Basque Country, Campus of Leioa (Bizkaia) - P.O. Box 644- Bilbao, Barrio Sarriena, 48940- Leioa, Spain.
Publikováno v:
Heliyon [Heliyon] 2020 Aug 26; Vol. 6 (8), pp. e04785. Date of Electronic Publication: 2020 Aug 26 (Print Publication: 2020).