@article{DAN_1996_349_2_a4,
     author = {A. Yu. Kolesov and N. Kh. Rozov},
     title = {On $C^1$-approximation of solutions of systems of differential},
     journal = {Doklady Akademii Nauk},
     pages = {162--164},
     publisher = {mathdoc},
     volume = {349},
     number = {2},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_349_2_a4/}
}