%0 Journal Article %A V. I. Meleshko %T An investigation of stable $L$-pseudo-inverses of unbounded closed operators by the regularization method %J Differencialʹnye uravneniâ %D 1979 %P 921-935 %V 15 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1979_15_5_a17/ %G ru %F DE_1979_15_5_a17