Open Access
Issue
4open
Volume 3, 2020
Article Number 11
Number of page(s) 9
Section Mathematics - Applied Mathematics
DOI https://doi.org/10.1051/fopen/2020012
Published online 11 September 2020

© V.A. González-López and R. Rodrigues de Moraes, Published by EDP Sciences, 2020

Licence Creative CommonsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.