@article{SJVM_2002_5_4_a0,
     author = {M. Yu. Kokurin and V. V. Klyuchev},
     title = {Necessary conditions for a given convergence rate of iterative methods for solution of linear ill-posed operator equations in {a~Banach} space},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {295--310},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2002_5_4_a0/}
}