À propos de cet article
Publié en ligne: 22 déc. 2015
Pages: 169 - 178
Reçu: 01 mai 2013
Accepté: 01 nov. 2013
DOI: https://doi.org/10.2478/auom-2014-0057
Mots clés
© 2014 Virgil Pescar et al., published by De Gruyter Open
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Virgil Pescar
Department of Mathematics, ”Transilvania” University of Braşov, Faculty of Mathematics and Computer Science, 500091 Braşov, Romania
Daniel Breaz
Department of Mathematics, ”1 Decembrie 1918” University of Alba Iulia, Faculty of Science, 510009 Alba Iulia, Romania.