About this article
Published Online: Oct 18, 2019
Page range: 324 - 330
Received: Dec 10, 2016
Accepted: Nov 12, 2018
DOI: https://doi.org/10.2478/msp-2019-0047
Keywords
© 2019 Jiang-Yan Li, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Li, Jiang-Yan
Departerment of Information Engineering, Binzhou UniversityBinzhou, China