@article{DAN_1962_142_6_a1,
     author = {L. A. Groza},
     title = {Asymptotic behaviour of the solutions of a linear differential equation of second order in a {Banach}},
     journal = {Doklady Akademii Nauk},
     pages = {1227--1230},
     year = {1962},
     volume = {142},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_142_6_a1/}
}