@article{VMUMM_1989_5_a14,
     author = {V. V. Kozlov},
     title = {Principles of dynamics and servoconstraints},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {59--66},
     publisher = {mathdoc},
     number = {5},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1989_5_a14/}
}