%0 Journal Article %A V. V. Vasin %T Relationship of several variational methods for the approximate solution of ill-posed problems %J Matematičeskie zametki %D 1970 %P 265-272 %V 7 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1970_7_3_a0/ %G ru %F MZM_1970_7_3_a0