@article{DAN_1975_221_5_a4,
     author = {S. P. Kovalenko},
     title = {Some subspace distribution theorems and their application to the study of linear operators},
     journal = {Doklady Akademii Nauk},
     pages = {1023--1026},
     publisher = {mathdoc},
     volume = {221},
     number = {5},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_221_5_a4/}
}