@article{DAN_1980_250_6_a20,
     author = {E. V. Radkevich},
     title = {Method of variation of the boundary in nonstationary filtering},
     journal = {Doklady Akademii Nauk},
     pages = {1359--1363},
     publisher = {mathdoc},
     volume = {250},
     number = {6},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_250_6_a20/}
}