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@article{DAN_1969_186_2_a4, author = {M. E. Ratner}, title = {The invariant measure for an $Y$-flow on a three-dimensional manifold}, journal = {Doklady Akademii Nauk}, pages = {261--263}, publisher = {mathdoc}, volume = {186}, number = {2}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_2_a4/} }
M. E. Ratner. The invariant measure for an $Y$-flow on a three-dimensional manifold. Doklady Akademii Nauk, Tome 186 (1969) no. 2, pp. 261-263. http://geodesic.mathdoc.fr/item/DAN_1969_186_2_a4/