@article{DAN_1972_207_3_a7,
     author = {V. P. Petrenko},
     title = {Deviations of integral curves of lower order $\lambda<1$},
     journal = {Doklady Akademii Nauk},
     pages = {538--540},
     publisher = {mathdoc},
     volume = {207},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_207_3_a7/}
}