@article{DE_1999_35_4_a16,
     author = {V. V. Pod'yapol'skii},
     title = {Completeness and the {Abel} basis property of a system of root functions of a nonlocal problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {568--569},
     publisher = {mathdoc},
     volume = {35},
     number = {4},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_4_a16/}
}