1. E. G. Broadbent, A class of twodimensional flows with heat addition, R.A.E. Technical Report 68005 (A.R.C. 30214), 1968.
2. A. W. Liepmann, A. Roshko, Elements of gas dynamics, New York 1957.
3. L. H. Townend, Ramjet propulsion for hypersonic aircraft, Euromech 3 Colloquim, Aachen 1966.
4. K. W. Mangler, Private communication.
5. E. G. Broadbent, External heat addition for supersonic propulsion, Ing.-Arch.