1. Interview with Dr. Puri, June 15, 2014. Ambala.
2. Interview with Mr. Dutt, July 30, 2016. In Gurgaon, Haryana.
3. Interview with Mr. and Mrs. Chaman, August 9, 2016. New Delhi.
4. Interview with Mr. Chopra, August 18, 2016. In New Delhi.
5. Interview with Mr. Kapoor and Mrs. Sharan, New Delhi, India. August 5, 2010.