@article{DAN_1974_219_3_a8,
     author = {Kh. Sh. Mukhtarov},
     title = {On some estimates for a singular operator and their applications},
     journal = {Doklady Akademii Nauk},
     pages = {550--552},
     publisher = {mathdoc},
     volume = {219},
     number = {3},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_219_3_a8/}
}