1. R. G. RAGSDALE, “High-Specific-Impulse Gas-Core Reactors,” NASA TMX-2243, National Aeronautics and Space Administration (1971).
2. Review of Fission Engine Concepts
3. P. MARTENEY, A. E. MENSING, and N. L. KRASCALLA, “Experimental Investigation of Spectral Emission Characteristics of Argon-Tungsten and Argon Uranium Induction Heated Plasmas,” NASA CR-1314, National Aeronautics and Space Administration (1969).
4. R. J. RODGERS, T. LATHAM, and H. E. BAUER, “Analytical Studies of Nuclear Light Bulb Engine Radient Heat Transfer and Performance Characteristics,” Report K-910400-10, NASA Contract SNPC-70, United Aircraft Research Laboratories, East Hartford, Connecticut (1969).
5. D. E. PARKS, G. LANE, J. C. STEWART, and S. PEYTON, “Optical Constants of Uranium Plasma,” NASA CR-72348, National Aeronautics and Space Administration (1968).