@article{VMUMM_1991_4_a26,
     author = {D. V. Zenkov},
     title = {On the problem of a ball rolling on a surface of revolution},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {94--97},
     publisher = {mathdoc},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1991_4_a26/}
}