%0 Journal Article %A L. A. Aksent'ev %T Geometric aspects of inverse boundary value problems %J Trudy seminara po kraevym zadačam %D 1964 %P 14-18 %V 1 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUKZ_1964_1_1_a1/ %G ru %F KUKZ_1964_1_1_a1