@article{DAN_1971_201_6_a4,
     author = {G. M. Magomedov},
     title = {Stability of a singular integral with respect to the contour of integration},
     journal = {Doklady Akademii Nauk},
     pages = {1285--1287},
     year = {1971},
     volume = {201},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_201_6_a4/}
}