À propos de cet article
Publié en ligne: 18 avr. 2017
Pages: 123 - 130
Reçu: 06 févr. 2017
Accepté: 18 avr. 2017
DOI: https://doi.org/10.21042/AMNS.2017.1.00010
Mots clés
© 2017 Tetiana Klymchuk, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Klymchuk, Tetiana
Departament de Matemàtiques, Universitat Politècnica de CatalunyaBarcelona, Spain
Faculty of Mechanics and Mathematics, Taras Shevchenko National University of KyivKyiv, Ukraine