%0 Journal Article
%A V. I. Meleshko
%T Perturbations of unbounded closed pseudoinverse operators
%J Differencialʹnye uravneniâ
%D 1979
%P 681-694
%V 15
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1979_15_4_a11/
%G ru
%F DE_1979_15_4_a11