1. Department of Physics, Anjuman College of Engineering and Technology, Sadar, Nagpur, India
2. Department of Physics, Yeshwantrao Chavan College of Engineering (YCCE), Nagpur, India
3. School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, Maharashtra, India
4. Department of Physics & Electronics, GVISH, Amravati, India