1. J.B. Heywood: Internal Combustion Engine Fundamentals, McGraw-Hill Publishing Corp., New York, NY, 1988, p. 699.
2. J.E. Allison: Ford Motor Company, Scientific Research Laboratory, Dearborn, MI, private communication, 1997.
3. R. Chiumert and M. Garat: 3rd Int. Symp. on Aluminum and Automobile, 1988, Aluminium-Verlag GmbH, Düsseldorf, 1998, pp. 154–59.
4. A. Wickberg, G. Gustafson, and L.E. Larson: SAE Trans., 1984, vol. 93, pp. 728–35.
5. O. Vorren, J.E. Evensen, and T.B. Pedersen: AFS Trans., 1984, vol. 92, pp. 459–66.