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@article{FAA_1977_11_3_a2, author = {B. M. Gurevich}, title = {Perfect partitions for ergodic flows}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {20--23}, publisher = {mathdoc}, volume = {11}, number = {3}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1977_11_3_a2/} }
B. M. Gurevich. Perfect partitions for ergodic flows. Funkcionalʹnyj analiz i ego priloženiâ, Tome 11 (1977) no. 3, pp. 20-23. http://geodesic.mathdoc.fr/item/FAA_1977_11_3_a2/