@article{KUKZ_1971_8_8_a8,
     author = {V. I. Zhegalov},
     title = {A linear operator-differential equation},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {70--79},
     publisher = {mathdoc},
     volume = {8},
     number = {8},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1971_8_8_a8/}
}