Authors
A. K. Asboei
Department of Mathematics, Farhangian University, Tehran, Iran (Islamic Republic of)
R. Mohammadyari
Department of Mathematics, Buinzahra Branch, Islamic Azad University, Buin Zahra, Iran (Islamic Republic of)
© 2017 A. K. Asboei, R. Mohammadyari, published by Sapientia Hungarian University of Transylvania
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.