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@article{MAT_1960_4_4_a3, author = {L. V. H\"ormander}, title = {On the regularity of the solutions of boundary problems}, journal = {Matematika}, pages = {37--74}, publisher = {mathdoc}, volume = {4}, number = {4}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1960_4_4_a3/} }
L. V. Hörmander. On the regularity of the solutions of boundary problems. Matematika, Tome 4 (1960) no. 4, pp. 37-74. http://geodesic.mathdoc.fr/item/MAT_1960_4_4_a3/