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@article{DAN_1991_316_1_a10, author = {I. I. Shamaev}, title = {Operators of diffusion type}, journal = {Doklady Akademii Nauk}, pages = {47--50}, publisher = {mathdoc}, volume = {316}, number = {1}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1991_316_1_a10/} }
I. I. Shamaev. Operators of diffusion type. Doklady Akademii Nauk, Tome 316 (1991) no. 1, pp. 47-50. http://geodesic.mathdoc.fr/item/DAN_1991_316_1_a10/