1. Weinstein, H. and R. G. Ragsdale, A. Coaxial Flow Reactor ? A Gaseous Nuclear Rocket Concept, A.R.S. Preprint No. 1578-60, 1960.
2. Spencer, D. F., Thermal and Criticality Analysis of the Plasma Core Reactor, Jet Propulsion Laboratory Technical Report No. 32-189, 1962.
3. Schneider, J. P., Trans. Amer. Soc. Mech. Engrs. 79 (1957) 765.
4. Shorin, S. N., Izv. Akad. Nauk S.S.S.R., Otd. Tekh. Nauk. (1951) 389.
5. Adrianov, V. N. and S. N. Shorin, Izv. Akad. Nauk S.S.S.R., Otd. Tekh. Nauk (1958) 46.