1. S. L. Bragg: Influence of Operating Temperature on the Design and Performance of Gas Turbines. Iron and Steel Institute Report No. 43 (1951) London, p. 23.
2. R. V. Hensley, N. D. Sanders, and R. P. Krebs: Performance of the Turbojet Engine. Preprint No. 148. Institute of Aeronautical Sciences.
3. Resume on High-Temperature Investigation Conducted During 1951–52. Timken Roller Bearing Co. Canton, Ohio.
4. The 1943 Supercharger Symposium Lecture Book. General Electric Co. Riverworks, West Lynn, Mass. p. 68.