%0 Journal Article %A S. N. Kudryashov %T The number of solutions of an exterior inverse boundary value problem %J Trudy seminara po kraevym zadačam %D 1971 %P 136-143 %V 8 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUKZ_1971_8_8_a16/ %G ru %F KUKZ_1971_8_8_a16