1. Rohm and Haas, Huntsville;SE Anderson,1966
2. Bacon, W. S. and Braun, J. V., ‘High Mass Ratio by the Use of Multiple Propellant Grains’, Bull. of the 15th Meeting of the JANAF Solid Propellant Group, Vol. I, June 1959, pp. 165–192 (*0127, #0925)
3. Explosives Research and Development Establishment, Tech Memo;CM Badrick,1958
4. Barrere, M., Jaumotte, A., Fraeys de Veubeke, B., and Vandenkerckhove, J., Rocket Propulsion, Elsevier Publ. Co., Amsterdam, 1959;
5. Ibid., La propulsion par fusées, Dunod, Paris, 1957.