@article{DAN_1989_307_5_a4,
     author = {A. F. Matveev},
     title = {Construction of approximate solutions of singular integral},
     journal = {Doklady Akademii Nauk},
     pages = {1046--1050},
     year = {1989},
     volume = {307},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_307_5_a4/}
}