@article{DAN_1984_276_2_a13,
     author = {A. A. Shkalikov},
     title = {Operator-differential equations on the half-axis and related},
     journal = {Doklady Akademii Nauk},
     pages = {309--314},
     publisher = {mathdoc},
     volume = {276},
     number = {2},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_276_2_a13/}
}