@article{DAN_1957_114_2_a0,
     author = {R. \`E. Vinograd},
     title = {The inadequacy of the method of characteristic exponents when applied to non-linear equations},
     journal = {Doklady Akademii Nauk},
     pages = {239--240},
     publisher = {mathdoc},
     volume = {114},
     number = {2},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_114_2_a0/}
}