1. School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Permanent Campus Argul, Jatni, Khurda 752 050, Odisha, India
2. Department of Mathematics and Computer Science, Royal Military College of Canada, P.O. Box 17000, STN Forces, Kingston Ont., Canada K7K 7B4
3. Royal Canadian Air Force (RCAF), 34 Tylee Pvt, Ottawa, ON K1V 7M3, Canada