@article{DE_1967_3_10_a13,
     author = {M. A. Aleksidze},
     title = {The completeness of certain function systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1766--1771},
     publisher = {mathdoc},
     volume = {3},
     number = {10},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_10_a13/}
}