作 者:Isack E. Kibona ;Cuihong Yang School of Mathematics ;Statistics, Central China Normal University, P. R. China. School of Natural Science, Mbeya University of Science 等
出 处:Journal of Scientific Research and Reports. 2018 ;19(6):1-19.doi:10.9734/JSRR/2018/41918
出 版 社:Sciencedomain International
文 章 ID:226447816