%0 Journal Article %A V. V. Volchkov %T A definitive version of the~local two-radii theorem %J Sbornik. Mathematics %D 1995 %P 783-802 %V 186 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1995_186_6_a1/ %G en %F SM_1995_186_6_a1