About this article
Published Online: Nov 30, 2017
Page range: 485 - 494
Received: Jun 07, 2017
Accepted: Nov 30, 2017
DOI: https://doi.org/10.21042/AMNS.2017.2.00040
Keywords
© 2017 M.S. Bruzón, T.M. Garrido and R. de la Rosa, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Bruzón, M.S.
Department of Mathematics, University of CadizCádiz, Spain
Garrido, T.M.
Department of Mathematics, University of CadizCádiz, Spain
de la Rosa, R.
Department of Mathematics, University of CadizCádiz, Spain