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@article{IVM_1976_1_a16, author = {G. O. \`El'sting}, title = {A~certain invariant subalgebra in the {Hamiltonian} and the contact {Lie} algebra}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {129--131}, publisher = {mathdoc}, number = {1}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1976_1_a16/} }
G. O. Èl'sting. A~certain invariant subalgebra in the Hamiltonian and the contact Lie algebra. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1976), pp. 129-131. http://geodesic.mathdoc.fr/item/IVM_1976_1_a16/