@article{DAN_1990_314_5_a13,
     author = {M. B. Ragimov},
     title = {Operator pencils and almost periodicity of bounded solutions of},
     journal = {Doklady Akademii Nauk},
     pages = {1079--1082},
     year = {1990},
     volume = {314},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_5_a13/}
}