@article{VSGTU_2007_2_a1,
     author = {E. V. Sokolovskaya},
     title = {Lower approximation of systems of differential inclusions of one kind with slow and fast variables},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {6--17},
     publisher = {mathdoc},
     number = {2},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2007_2_a1/}
}