1. Polytechnic School of Cuenca, University of Castilla-La Mancha,SIDIS Research Group,Department of Mathematics,Cuenca,Spain
2. Institute of Applied Mathematics in Science and Engineering (IMACI), Polytechnic School of Cuenca, University of Castilla-La Mancha,SIDIS Research Group,Department of Mathematics,Cuenca,Spain
3. University of Castilla-La Mancha (UCLM),Research Group in Electronic, Biomedical and Telecommunication Engineering,Cuenca,Spain,16071