Arumugam, A., A. Kabadwal, R. Joshi, S. Singh, M. Prabhu, A. Singh, S. Elangovan, and M. Sundararaj. “Innovative Method for the Estimation of Closure Velocity Between RAT Driven Drogue and IFR Probe Air to Air Refueling Flight Trials”. Defence Science Journal, Vol. 70, no. 2, Mar. 2020, pp. 140-4, doi:10.14429/dsj.70.14100.