@article{DE_1976_12_12_a7,
     author = {V. M. Millionshchikov},
     title = {A formula for the entropy of smooth dynamical systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2188--2192},
     publisher = {mathdoc},
     volume = {12},
     number = {12},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_12_a7/}
}