Authors
Carlos Rodríguez
Department of Computer Sciences and Automatic Control, National University of Distance Education (UNED), Madrid, Spain
Ernesto Aranda-Escolástico
Department of Computer Sciences and Automatic Control, National University of Distance Education (UNED), Madrid, Spain
María Guinaldo
Department of Computer Sciences and Automatic Control, National University of Distance Education (UNED), Madrid, Spain
José Luis Guzmán
Department of Computer Science, University of Almería, Almería, Spain
Sebastián Dormido
Department of Computer Sciences and Automatic Control, National University of Distance Education (UNED), Madrid, Spain