1. Proposal and analysis of a new numerical method for the treatment of hydrodynamical shock problems. A report submitted by the Applied Mathematics Group, Institute for Advanced Study, to the Applied Mathematics Panel;Neumann;N. D. R. C. Rept.,1944
2. See Riemann Weber, Die partiellen Differentialgleichungen der mathematischen Physik. 4. Aufl., 2. Bd., pp. 469-521. This exposition is based on Riemann's paper Über die Fortpflanzung ebener Luftwellen von endlicher Schwingungsweite, Abhandlg. Göttinger Ges. Wiss., Bd. VIII (1860). In later editions of Riemann-Weber, i. e. 5th and 6th editions, the conception of entropy changes across the shock advanced by Hugoniot, Rankine, and others is discussed.
3. Supersonic flow and shock waves. A manual on the mathematical theory of non-linear wave motion. Prepared for the Applied Mathematics Panel, N. D. R. C. by the Applied Mathematics Group, New York University [A. M. G., N. Y. U.62, A. M. P. Rept.38.2R (1944)]. This important manual (to be quoted in the following as Man.) contains an extensive bibliography up to 1944. See regarding (4), Man. pp. 81, 92.
4. Interaction of shock and rarefaction waves in one-dimensional motion;Courant;NDRC, AMP Rep.,1943