TY  - JOUR
AU  - M. E. Ratner
TI  - A central limit theorem for $Y$-flows on three-dimensional manifolds
JO  - Doklady Akademii Nauk
PY  - 1969
SP  - 519
EP  - 521
VL  - 186
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1969_186_3_a7/
LA  - ru
ID  - DAN_1969_186_3_a7
ER  -