- Adams , R.A. 1975 . Sobolev Spaces , New York : Academic Press .
- Brio , M. 1992 . Mach reflection for the two dimensional Burgers equation . Physica D , 60 : 194 – 207 .
- Čanić S. Keyfitz B.L. Quasi-one-dimensional Riemann problems and their role in self-similar two-dimensional problems. In preparation
- Čanić S. Keyfitz B.L. An elliptic problem arising from the unsteady transonic small disturbance equation Journal of Differential Equations to appear
- Čanić S. Keyfitz B.L. Wagner D.H. A bifurcation diagram for oblique shock interactions in the unsteady transonic small disturbance equation. In Proceedings of the Fifth International Conference on Hyperbolic Problems Theory, Numerics, and Applications to appear
- Fichera , G. 1956 . Sulle equazioni differenziali lineari ellittico-paraboliche del secondo ordine. . Atti. Accad. Naz. Lincei. Mem. Cl.Sci.Fis.Mat.Nat.Ser. I , 5 : 1 – 30 .
- Gilbarg , D. and Trudinger , N.S. 1977 . Elliptic Partial Differential Equations of Second Order , New York : Springer-Verlag .
- Harabetian , E. 1987 . Diffraction of a weak shock by a wedge. . Communications on Pure and Applied Mathematics , XL : 849 – 863 .
- Keldysh , M.V. 1951 . On some cases of degenerate elliptic equations on the boundary of a domain . Doklady Acad. Nauk USSR , 77 : 181 – 183 .
- Kohn , J.J. and Nirenberg , L. 1967 . Degenerate elliptic-parabolic equations of second order. . Communications on Pure and Applied Mathematics , XX : 797 – 872 .
- Ladyzhenskaya , O.A. and Ural'tseva , N.N. 1968 . Linear and Quasilinear Elliptic Equations , New York : Academic Press . London
- Nečas , J. 1986 . Introduction to the Theory of Nonlinear Elliptic Equations , New York : John Wiley and Sons .
- Ole[icaron]nik , O.A. and Radkevič , E.V. “ Second order Equations with nonnegative Characteristic Form ” . In American Mathematical Society
- Renardy , M. and Rogers , R.C. 1993 . An Introduction to Partial Differential Equations , New York : Springer-Verlag .
- Tabak E.G. Rosales R.R. Weak shock focusing and the von Neumann paradox Physics of Fluids A to appear
- Tricomi , F. 1923 . Sulle equazioni lineari alle derivate parziali di secondo ordine, di tipo misto. . Rend. Reale. Accad. Lincei , 14 : 134 – 247 .
- Triebel , H. 1978 . “ Interpolation Theory, Function Spaces ” . In Differential Operators , Amsterdam : North-Holland .
Communications in Partial Differential Equations
Volume 21, 1996 - Issue 1-2