%0 Journal Article %A E. O. Sivkova %T Best recovery of the Laplace operator of a~function and sharp inequalities %J Fundamentalʹnaâ i prikladnaâ matematika %D 2013 %P 175-185 %V 18 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2013_18_5_a9/ %G ru %F FPM_2013_18_5_a9