%0 Journal Article %A V. K. Romanko %T On regular operators for linear systems of equations %J Differencialʹnye uravneniâ %D 1996 %P 339-345 %V 32 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1996_32_3_a8/ %G ru %F DE_1996_32_3_a8