TY  - JOUR
AU  - V. V. Lychagin
TI  - On sufficient orbits of a~group of contact diffeomorphisms
JO  - Sbornik. Mathematics
PY  - 1977
SP  - 223
EP  - 242
VL  - 33
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1977_33_2_a3/
LA  - en
ID  - SM_1977_33_2_a3
ER  -