@article{DAN_1958_119_4_a1,
     author = {R. \`E. Vinograd},
     title = {The general case of the stability of characteristic exponents and the existence of leading coordinates},
     journal = {Doklady Akademii Nauk},
     pages = {633--635},
     publisher = {mathdoc},
     volume = {119},
     number = {4},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_119_4_a1/}
}