@article{TSP_2016_31_31_a8,
     author = {I. N. Sergeev},
     title = {Lyapunov characteristics of oscillation, rotation, and wandering of solutions of differential systems},
     journal = {Trudy Seminara im. I.G. Petrovskogo},
     pages = {177--219},
     publisher = {mathdoc},
     volume = {31},
     number = {31},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TSP_2016_31_31_a8/}
}