%0 Journal Article %A A. V. Bayev %T The Lagrange principle and finite-dimensional approximations in the optimal inverse problem for linear operators %J Numerical methods and programming %D 2006 %P 323-336 %V 7 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMP_2006_7_4_a3/ %G ru %F VMP_2006_7_4_a3