%0 Journal Article %A S. I. Kabanikhin %T Application of energy inequalities to an inverse problem for a hyperbolic equation %J Differencialʹnye uravneniâ %D 1979 %P 61-67 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1979_15_1_a7/ %G ru %F DE_1979_15_1_a7