@article{DE_1995_31_9_a8,
     author = {P. P. Zabreiko},
     title = {The $L_2$-theory of linear {Fredholm} integral equations of the second kind},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1498--1507},
     publisher = {mathdoc},
     volume = {31},
     number = {9},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1995_31_9_a8/}
}