Authors
Wenyi Liu
College of Mathematics and Physics, University of South China, Hengyang, China
Jiwen Hu
College of Mathematics and Physics, University of South China, Hengyang, China
Yatao Liu
College of Mathematics and Physics, University of South China, Hengyang, China
Weirui Lei
College of Mathematics and Physics, University of South China, Hengyang, China
Xuekun Chen
College of Mathematics and Physics, University of South China, Hengyang, China