À propos de cet article
Publié en ligne: 31 déc. 2018
Pages: 627 - 648
Reçu: 17 oct. 2018
Accepté: 31 déc. 2018
DOI: https://doi.org/10.2478/AMNS.2018.2.00048
Mots clés
© 2018 A. Durán, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Durán, A.
Applied Mathematics Department, University of ValladolidValladolid, Spain