1. CA Mecatronica, Facultad de Ingenieria, Universidad Autonoma de Queretaro, San Juan del Rio, Mexico
2. Technical University of Catalonia (UPC), Department of Electronic Engineering, MCIA Research Center, Terrassa, Spain
3. CA Procesamiento Digital de Señales, CA Telematica, Division de Ingenierias, Campus Irapuato-Salamanca, Universidad de Guanajuato, Salamanca, Mexico