@article{VMUMM_1992_3_a17,
     author = {V. V. Beletskii and A. V. Dolganov and O. P. Salimova},
     title = {Some model problems in the dynamics of a hopping apparatus},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {69--72},
     publisher = {mathdoc},
     number = {3},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1992_3_a17/}
}