%0 Journal Article %A V. V. Dubrovskii %A A. V. Nagornyi %T An inverse problem for a power of the Laplace operator with potential from $L^2$ %J Differencialʹnye uravneniâ %D 1992 %P 1552-1561 %V 28 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1992_28_9_a9/ %G ru %F DE_1992_28_9_a9