@article{ND_2010_6_1_a8,
     author = {N. N. Butenina and V. S. Metrikin},
     title = {Studying the nonautonomous differential equations by methods of qualitative theory of control dynamical systems},
     journal = {Russian journal of nonlinear dynamics},
     pages = {143--150},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2010_6_1_a8/}
}