Affiliation: | 1.Departamento de Matemáticas, Instituto Universitario de Matemáticas y Aplicaciones de Castellón, Universitat Jaume I, Campus de Riu Sec, 12071, Castellón de la Plana, Spain ;2.Department of Information and Communication Engineering, Nagoya University, 464-8603, Nagoya, Japan ;3.Department of Mathematical Sciences, Aalborg University, 9220, Aalborg, Denmark ;4.IMUVA-Mathematics Research Institute, University of Valladolid, 47011, Valladolid, Spain ; |