TY - JOUR AU - S. N. Kruzhkov TI - Generalized solutions of the Hamilton–Jacobi equations of eikonal type. I. Formulation of the problems; existence, uniqueness and stability theorems; some properties of the solutions JO - Sbornik. Mathematics PY - 1975 SP - 406 EP - 446 VL - 27 IS - 3 UR - http://geodesic.mathdoc.fr/item/SM_1975_27_3_a6/ LA - en ID - SM_1975_27_3_a6 ER -