1. University of Zaragoza,Department of Computer Science and Systems Engineering,Zaragoza,Spain
2. Institute of Automation and Control, Graz University of Technology,Christian Doppler Laboratory for Model Based Control of Complex Test Bed Systems,Graz,Austria
3. CONICET-UNR,Centro Internacional Franco-Argentino de Ciencias de la Información y de Sistemas (CIFASIS),Rosario,Argentina,2000
4. Intel Tecnología de México, Intel Labs, Intelligent Systems Research Lab,Jalisco,Mexico