1. and Proc. 14th Symp. (Int.) Combustion, Combustion Institute, Pittsburgh, (1973), p. 133.
2. and private communication.
3. in ?Physics and Chemistry in the Upper Atmosphere?, Ed., D. Reidel Publ. Co., 1973.
4. and Proc. 11th Symp. (Int.) Combustion, Combustion Institute, Pittsburgh, 1967, p. 951.