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@article{DAN_1969_184_2_a13, author = {A. M. Obukhov}, title = {Integral invariants in hydrodynamic systems}, journal = {Doklady Akademii Nauk}, pages = {309--312}, publisher = {mathdoc}, volume = {184}, number = {2}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_184_2_a13/} }
A. M. Obukhov. Integral invariants in hydrodynamic systems. Doklady Akademii Nauk, Tome 184 (1969) no. 2, pp. 309-312. http://geodesic.mathdoc.fr/item/DAN_1969_184_2_a13/