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@article{MZM_1970_8_4_a4, author = {S. B. Katok}, title = {Linear extensions of dynamic systems and the reducibility problem}, journal = {Matemati\v{c}eskie zametki}, pages = {451--462}, publisher = {mathdoc}, volume = {8}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1970_8_4_a4/} }
S. B. Katok. Linear extensions of dynamic systems and the reducibility problem. Matematičeskie zametki, Tome 8 (1970) no. 4, pp. 451-462. http://geodesic.mathdoc.fr/item/MZM_1970_8_4_a4/