1. Serra, R. A. "TheDetermination of Internal Gas Flows by a Transient Numerical Technique," Ph.D. thesis,June 1970, Rensselaer Polytechnic Inst, Troy, N.Y.
2. Lax, P. D. and Wendroff, B. "Difference Schemes with High Order of Accuracy for Solving Hyperbolic Equations," CIMS Report NYO-9759, July 1962, New York Univ., New York.
3. Finite-difference calculations for hydrodynamic flows containing discontinuities
4. Time-dependent calculations for transonic nozzle flow.