@article{ZVMMF_1984_24_5_a1,
     author = {A. R. Danilin and V. P. Tanana},
     title = {Necessary and sufficient conditions for convergence of approximations of linear ill-posed problems in {a~Hilbert} space},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {633--639},
     publisher = {mathdoc},
     volume = {24},
     number = {5},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1984_24_5_a1/}
}