@article{MZM_1992_52_4_a6,
     author = {G. A. Kurina},
     title = {Complete controllability of various-speed singularly perturbed systems},
     journal = {Matemati\v{c}eskie zametki},
     pages = {56--61},
     publisher = {mathdoc},
     volume = {52},
     number = {4},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1992_52_4_a6/}
}