@article{VMUMM_2018_4_a4,
     author = {E. I. Kugushev and M. A. Levin and T. V. Popova},
     title = {Mechanical systems with rapidly vibrating constraints},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {29--34},
     publisher = {mathdoc},
     number = {4},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2018_4_a4/}
}