@article{VMUMM_2020_3_a11,
     author = {A. M. Shmatkov},
     title = {Periodic solutions to the optimal control problem of rotation of a rigid body using internal mass},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {63--67},
     publisher = {mathdoc},
     number = {3},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2020_3_a11/}
}