1. Government Industrial Training Institute, Madina (Rohtak), Haryana, India; Department of Mechanical Engineering, UIET, Panjab University, Chandigarh, India
2. Department of Mechanical Engineering, UIET, Panjab University, Chandigarh, India
3. Physics Department, Punjab Engineering College (Deemed to be University), Chandigarh, India; Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, India