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@article{DAN_1993_333_6_a4, author = {A. I. Subbotin and N. N. Subbotina}, title = {Piecewise-smooth solutions of first-order partial differential}, journal = {Doklady Akademii Nauk}, pages = {705--707}, publisher = {mathdoc}, volume = {333}, number = {6}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1993_333_6_a4/} }
A. I. Subbotin; N. N. Subbotina. Piecewise-smooth solutions of first-order partial differential. Doklady Akademii Nauk, Tome 333 (1993) no. 6, pp. 705-707. http://geodesic.mathdoc.fr/item/DAN_1993_333_6_a4/