@article{DE_1987_23_8_a12,
     author = {N. G. Afendikova and I. K. Lifanov and A. F. Matveev},
     title = {On the approximate solution of singular integral equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1392--1402},
     publisher = {mathdoc},
     volume = {23},
     number = {8},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_8_a12/}
}