TY  - JOUR
AU  - A. V. Kochergin
TI  - Time changes in flows and mixing
JO  - Izvestiya. Mathematics 
PY  - 1973
SP  - 1273
EP  - 1294
VL  - 7
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1973_7_6_a4/
LA  - en
ID  - IM2_1973_7_6_a4
ER  -