@article{VMUMM_2020_5_a6,
     author = {E. I. Kugushev and T. V. Popova and S. V. Sazonov},
     title = {On the motion of a system with a moving internal element in the presence of external viscous friction},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {50--56},
     publisher = {mathdoc},
     number = {5},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2020_5_a6/}
}