%0 Journal Article %A V. Ivanov %T The solution of operator equations that are not well-posed %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1971 %P 232-240 %V 112 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1971_112_a14/ %G ru %F TM_1971_112_a14