1. Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, 62251, Cuernavaca, Mor., Mexico
2. División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana, Av. San Pablo 180, 02200, México, D.F.
3. School of Engineering and Physical Sciences, James Cook University, Townsville 4810, Australia
4. School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
5. Institute of Mathematical Sciences, University of Malaya, 5063 Kuala Lumpur, Malaysia