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@article{MAT_1972_16_6_a1, author = {L. V. H\"ormander}, title = {On the singularities of solutions of partial differential equations}, journal = {Matematika}, pages = {33--59}, publisher = {mathdoc}, volume = {16}, number = {6}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1972_16_6_a1/} }
L. V. Hörmander. On the singularities of solutions of partial differential equations. Matematika, Tome 16 (1972) no. 6, pp. 33-59. http://geodesic.mathdoc.fr/item/MAT_1972_16_6_a1/