@article{DE_1981_17_12_a18,
     author = {L. I. Piterbarg},
     title = {Investigation of a class of integral equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2278--2279},
     year = {1981},
     volume = {17},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_12_a18/}
}