Authors
H. Ansari-Toroghy
Department of Mathematics, Faculty of mathematical Sciences, University of Guilan, Rasht
Sh. Habibi
Department of Mathematics, Faculty of mathematical Sciences, University of Guilan, Rasht
© 2018 H. Ansari-Toroghy, Sh. Habibi, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.