About this article
Published Online: Dec 08, 2017
Page range: 519 - 528
Received: May 07, 2017
Accepted: Dec 08, 2017
DOI: https://doi.org/10.21042/AMNS.2017.2.00043
Keywords
© 2017 Habib Marzougui published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Marzougui, Habib
University of Carthage, Faculty of Science of Bizerte, Department of MathematicsJarzouna, Tunisia