Copyright (c) 2017 P. Hueso-González, J.F. Martínez-Murillo, J.D. Ruiz-Sinoga

This work is licensed under a Creative Commons Attribution 4.0 International License.
© Universidad de La Rioja, 2013
ISSN 0211-6820
EISSN 1697-9540
© Universidad de La Rioja, 2013
ISSN 0211-6820
EISSN 1697-9540