@article{DE_1967_3_3_a4,
     author = {V. K. Ivanov},
     title = {Fredholm integral equations of the first kind},
     journal = {Differencialʹnye uravneni\^a},
     pages = {410--421},
     publisher = {mathdoc},
     volume = {3},
     number = {3},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_3_a4/}
}