Ram N. Yadav - Veer Bahadur Singh Purvanchal University
Sunena Chandra - Department of Chemistry, University of Texas-Pan American, 1201 W. University Dr., Edinburg, TX 78539, USA.
Armando Paniagua - Department of Chemistry, University of Texas-Pan American, 1201 W. University Dr., Edinburg, TX 78539, USA.
Md Firoj Hossain - North Bengal University
Bimal Krishna Banik - Prince Mohammad bin Fahd University