@article{DAN_1973_212_1_a3,
     author = {I. I. Ibragimov and A. D. Gadzhiev},
     title = {The order of convergence of singular integrals of {Cauchy--Stieltjes} type},
     journal = {Doklady Akademii Nauk},
     pages = {23--26},
     publisher = {mathdoc},
     volume = {212},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_1_a3/}
}