TY  - JOUR
AU  - V. V. Kozlov
TI  - The dynamics of systems with nonintegrable constraints. IV. Integral principles
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1987
SP  - 76
EP  - 83
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1987_5_a16/
LA  - ru
ID  - VMUMM_1987_5_a16
ER  -