@article{DE_2002_38_12_a12,
     author = {G. A. Grigoryan},
     title = {Special {Factorization} of a {Noninvertible} {Fredholm} {Operator} of the {Second} {Kind}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1690--1697},
     publisher = {mathdoc},
     volume = {38},
     number = {12},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_12_a12/}
}