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@article{MZM_1967_2_4_a5, author = {Ya. G. Sinai}, title = {A lemma from measure theory}, journal = {Matemati\v{c}eskie zametki}, pages = {373--378}, publisher = {mathdoc}, volume = {2}, number = {4}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1967_2_4_a5/} }
Ya. G. Sinai. A lemma from measure theory. Matematičeskie zametki, Tome 2 (1967) no. 4, pp. 373-378. http://geodesic.mathdoc.fr/item/MZM_1967_2_4_a5/