1. Optimization of stored pressurant supply for liquid propulsion systems
2. Eckert, E. R. G. and Drake, Jr., R. M., Heat and Mass Transfer, 2nd ed.McGraw-Hill, New York, 1959, pp.324-325.
3. 4Pressurization Systems Design Guide, Vol. I, Rept. 2736, Dec. 1965. Aerojet-General Corp., Von Karman Center, Azusa, Calif.