1. Department of Applied Sciences, I.K. Gujral Punjab Technical University, Kapurthala, Punjab, India
2. Swami Premanand Mahavidyalaya, Mukerian, Punjab, India
3. Beant College of Engineering & Technology, Gurdaspur, Punjab, India
4. Shri Mata Vaishno Devi University, Katra, Jammu, J&K, India
5. Department of Physics, G.N.D.U., Amritsar, Punjab, India
6. Centre For Materials Science and Engg., NIT Hamirpur, 177005 (H.P.) India