@article{VMUMM_1995_3_a16,
     author = {E. E. Mednikova},
     title = {Homotopic properties of the neighborhood of a degenerate periodic solution for integrable {Hamiltonian} systems with a {non-Bottean} integral},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {84--88},
     year = {1995},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1995_3_a16/}
}