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@article{DAN_1957_116_1_a2, author = {V. A. Ditkin}, title = {On the theory of operator calculus}, journal = {Doklady Akademii Nauk}, pages = {15--17}, publisher = {mathdoc}, volume = {116}, number = {1}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_116_1_a2/} }
V. A. Ditkin. On the theory of operator calculus. Doklady Akademii Nauk, Tome 116 (1957) no. 1, pp. 15-17. http://geodesic.mathdoc.fr/item/DAN_1957_116_1_a2/