1. J. O. Hirschfelder, C. F. Curtiss, and R. B. Bird,Molecular Theory of Gases and Liquids(Wiley, New York, 1954), pp. 19, 695.
2. A. S. Iberall, “Contributions Toward Solutions of the Equations of Hydrodynamics; Part A: The Continuum Limitations of Fluid Dynamics,” prepared for Office of Naval Research, Washington, D.C. Contract No. NONR 34-5 (00), task NR 062-264, p. 265.
3. The Transition From Continuum to Molecular Flow
4. Cauchy's problem for hyperbolic quasi-linear systems of first order partial differential equations in two independent variables
5. On nonlinear partial differential equations with two independent variables