@article{DAN_1991_318_3_a1,
     author = {A. D. Bruno},
     title = {On a finitely smooth linearization of a system of differential},
     journal = {Doklady Akademii Nauk},
     pages = {524--527},
     publisher = {mathdoc},
     volume = {318},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_318_3_a1/}
}