%0 Journal Article %A M. Yu. Kokurin %A A. B. Bakushinsky %T On the achievable level of accuracy in solving abstract ill-posed problems and nonlinear operator equations in Banach space %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2022 %P 21-27 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2022_3_a2/ %G ru %F IVM_2022_3_a2