@article{FAA_1987_21_4_a5,
     author = {M. L. Byalyi},
     title = {First integrals that are polynomial in momenta for a mechanical system on a two-dimensional torus},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {64--65},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1987_21_4_a5/}
}