Authors
Andreea Fulga
Department of Mathematics and Computer Sciences, Universitatea Transilvania Brasov, Brasov, Romania
Erdal Karapınar
Atilim University, Department of Mathematics, Ankara, Turkey
© 2018 Andreea Fulga, Erdal Karapınar, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.