@article{DE_1977_13_1_a19,
     author = {A. P. Soldatov},
     title = {On the theory of singular integro-functional operators},
     journal = {Differencialʹnye uravneni\^a},
     pages = {140--154},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_1_a19/}
}