@article{VMUMM_2007_3_a10,
     author = {E. I. Kugushev and V. A. Mel'dianova},
     title = {Level manifolds of linear integrals in mechanical systems},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {43--49},
     publisher = {mathdoc},
     number = {3},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2007_3_a10/}
}