%0 Journal Article %A O. A. Liskovets %T The smoothing functional principle for regularizing equations with a closed operator %J Doklady Akademii Nauk %D 1978 %P 757-760 %V 241 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_241_4_a3/ %G ru %F DAN_1978_241_4_a3