@article{DAN_1992_322_1_a3,
     author = {G. Dzhangibekov},
     title = {A class of two-dimensional singular integral operators with},
     journal = {Doklady Akademii Nauk},
     pages = {22--27},
     year = {1992},
     volume = {322},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_322_1_a3/}
}