@article{DAN_1963_148_2_a3,
     author = {Ya. S. Bugrov},
     title = {Differential properties of the solutions of certain higher-order differential equtions},
     journal = {Doklady Akademii Nauk},
     pages = {259--261},
     publisher = {mathdoc},
     volume = {148},
     number = {2},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_148_2_a3/}
}