1. Professor, School of Engineering, Universidad Autonoma del Estado de Mexico, 50130 Toluca, Edo. de Mexico, Mexico.
2. Master of Engineering, School of Engineering, Universidad Autonoma del Estado de Mexico, 50130 Toluca, Edo. de Mexico, Mexico.
3. Professor, Institute of Engineering, Universidad Nacional Autonoma de Mexico, 04510 Coyoacan, Mexico, D. F., Mexico (corresponding author).