1. Regularity of Hamilton–Jacobi equations when forward is backward;Barron;Indiana Univ. Math. J.,1999
2. Hamilton's theory and generalized solutions of the Hamilton–Jacobi equation;Conway;J. Math. Mech.,1964
3. Generalized solutions of nonlinear equations of first order;Hopf;J. Math. Mech.,1965
4. Asymptotic behaviour of solutions of the Cauchy problem for first-order nonlinear equations;Kruzhkov;Usp. Math. Nauk,1987
5. J.P. Lions, Generalized solutions of Hamilton–Jacobi equations, Research Notes in Mathematics, vol. 69, Pitman, Boston, MA, 1982.