@article{TMF_2014_178_3_a5,
     author = {V. P. Pavlov},
     title = {Differential-geometric aspects of a~nonholonomic {Dirac} mechanics: {Lessons} of a~model quadratic in velocities},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {403--415},
     year = {2014},
     volume = {178},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2014_178_3_a5/}
}