%0 Journal Article %A O. A. Liskovets %T Discrete convergence of elements and operators for ill-posed %J Doklady Akademii Nauk %D 1985 %P 1058-1062 %V 280 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1985_280_5_a7/ %G ru %F DAN_1985_280_5_a7