1. S. N. Kruzhkov, “First order quasilinear equations in several independent variables” [in Russian], Mat. Sb., 81, No. 2, 228–255 (1970); English transl.: Math. USSR Sb. 10, No. 2, 217–243 (1970).
2. K. H. Karlsen, N. H. Risebro, and J. D. Towers, “L 1 stability for entropy solutions of nonlinear degenerate parabolic connection-diffusion equations with discontinuous coefficients,” Skr. K. Nor. Vid. Selsk. 3, 1–14 (2003).
3. K. H. Karlsen and J. D. Towers, “Convergence of the Lax–Friedrichs scheme and stability for conservation laws with a discontionuous space-time dependent flux,” Chin. Ann. Math. 25B, No. 3, 287–318 (2004).
4. P. L. Lions, B. Perthame, and E. Tadmor, “A kinetic formulation of multidimensional scalar conservation laws and related equations,” J. Am. Math. Soc. 7, No. 1, 169–191 (1994).
5. E. Yu. Panov, “On sequences of measure-valued solutions of first order quasilinear equations” [in Russian], Mat. Sb. 185, No. 2, 87–106 (1994); English transl.: Russian Acad. Sci. Sb. Math. 81, No. 1, 211–227 (1995).