1. Autonomous University of San Luis Potosi (UASLP),Faculty of Science,San Luis Potosi,Mexico
2. UASLP,Faculty of Science,San Luis Potosi,Mexico
3. CONAHCYT,Cátedras CONAHCYT,Zacatecas,Mexico
4. University of Insubria,Department of Theoretical and Applied Science (DiSTA),Varese,Italy