Saqr,M;University of Eastern Finland, School of Computing, Yliopistokatu 2, Joensuu;Lopez Pernas,S;University of Eastern Finland, School of Computing, Yliopistokatu 2, Joensuu;Conde,MA;University of Leon, Escuela de Ingenierias, Campus de Vegazana S/N, Leon;Conde,MA;Universidad de Salamanca, Escuela Politecnica Superior de Zamora, Av de Requejo, Zamora;Milic,MR;Belgrade Metropolitan University, Faculty of Information Technology, Tadeusa Koscuska 63, Belgrade