Authors
Fatma Tokmak Fen
Department of Mathematics, Gazi University, 06500 Teknikokullar,, Ankara, Turkey
Ilkay Yaslan Karaca
Department of Mathematics, Ege University, 35100 Bornova,, Izmir, Turkey
© 2017 Fatma Tokmak Fen, Ilkay Yaslan Karaca, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.