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@article{MZM_1969_5_1_a6, author = {\`E. \`E. Shnol'}, title = {On groups acting in phase space}, journal = {Matemati\v{c}eskie zametki}, pages = {55--61}, publisher = {mathdoc}, volume = {5}, number = {1}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1969_5_1_a6/} }
È. È. Shnol'. On groups acting in phase space. Matematičeskie zametki, Tome 5 (1969) no. 1, pp. 55-61. http://geodesic.mathdoc.fr/item/MZM_1969_5_1_a6/