1. Department of Biochemistry & Biophysics; University of Kalyani; Nadia-741235, WB India.
2. SAIF; CSIR-Central Drug Research Institute; Lucknow-226031 India.
3. Max-Planck-Institut fuer Kohlenforschung; Kaiser-Wilhelm-Platz 1, 45470 Muelheim an der Ruhr Germany
4. CSIR-Central Glass; Ceramic Research Institute, Jadavpur; Kolkata 700032 India