@article{VMUMM_1991_5_a2,
     author = {V. V. Kozlov},
     title = {Stability of periodic trajectories and {Chebyshev} polynomials},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {7--13},
     year = {1991},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1991_5_a2/}
}