1. H. Grad, “Principles of the Kinetic Theory of Gases,” inHandbuch der Physik, edited by S. Flügge (Springer-Verlag, Berlin, 1958), Vol. XII, Sec. 26.
2. For a study of the shock slip problem see Y. S. Pan and R. F. Probstein, inProceedings of Third International Conference on Rarefied Gases, Paris, 1962(to be published).
3. alsoGrundzüge einer Allgemeinen Theorie der Linearen Integralgleichungen(Chelsea Publishing Company, New York, 1953).