About this article
Published Online: Dec 12, 2015
Page range: 3 - 17
Received: Jan 10, 2015
Accepted: Feb 28, 2015
DOI: https://doi.org/10.1515/awutm-2015-0001
Keywords
© Annals of West University of Timisoara - Mathematics
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Chevreau, Bernard
Crăciunescu, Aurelian