Authors
Qingping He
School of Information and Mathematics, Yangtze University, Jingzhou, China
Yibing Lv
School of Information and Mathematics, Yangtze University, Jingzhou, China
© 2017 Qingping He, Yibing Lv, published by Bulgarian Academy of Sciences, Institute of Information and Communication Technologies
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.