Thomas, S., T. L. Varghese, S. K. Gupta, T. S. Ram, and V. N. Krishnamurthy. “Natural Rubber Based Fuel Rich Propellant for Ramjet Rocket”. Defence Science Journal, vol. 42, no. 3, Jan. 2013, pp. 141-6, doi:10.14429/dsj.42.4373.