@article{TMF_1972_11_3_a7,
     author = {\`E. \`E. Shnol'},
     title = {On groups that correspond to the simplest problems of classical mechanics},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {344--353},
     year = {1972},
     volume = {11},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1972_11_3_a7/}
}