@article{DAN_1966_170_5_a1,
     author = {A. A. Babaev},
     title = {Certain estimates for a singular integral},
     journal = {Doklady Akademii Nauk},
     pages = {1003--1005},
     publisher = {mathdoc},
     volume = {170},
     number = {5},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_170_5_a1/}
}