1. and Time-dependent near field muzzle brake flow simulations, AIAA-82-0973, AIAA/ASME Joint Thermophysics, Fluid, Plasma and Heat Transfer Conference, St. Louis, Missouri, June 7-12, 1982.
2. The use of the Riemann problem in finite difference schemes, Proceedings 7th International Conference on Numerical Methods in Fluid Dynamics, Stanford/NASA Ames, June 1980, Lecture Notes in Physics, 141, Springer-Verlag, New York, 1981, pp. 354-359.
3. Approximate Riemann solvers, parameter vectors, and difference schemes
4. Order stars and a saturation theorem for first order hyberbolics, University of Cambridge DAMPT NA3/81, 1981.