1. University of Las Palmas de GC,Las Palmas de GC,Spain
2. University of Las Palmas de GC,Institute for Applied Microelectronics,Department of Electrical Engineering,Las Palmas de GC,Spain
3. University Institute for Intelligent Systems and Numerical Applications in Engineering University of Las Palmas de GC,Dept. of Electrical Engineering,Las Palmas de GC,Spain