%0 Journal Article %A P. N. Vabishchevich %T Numerical Solution of the Identification Problem for the Lower Coefficient of an Elliptic Equation %J Differencialʹnye uravneniâ %D 2002 %P 943-948 %V 38 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2002_38_7_a10/ %G ru %F DE_2002_38_7_a10