Dr Sujaul Chowdhury

The work was done by Md. Abidur Rahman and Dr. Sujaul Chowdhury (schowdhuryphy@yahoo.com) as M.S. thesis of the former in 2013 in Department of Physics, Shahjalal University of Science and Technology: http://www.sust.edu, Sylhet 3114, Bangladesh. Dr Chowdhury is a faculty of the Department; he has a glorious record of academic, scientific, teaching and research achievements; details in http://schowdhury-phy.weebly.com/.