%0 Journal Article %A A. A. Nudelman %T Isoperimetric problems for the convex hulls of polygonal lines and curves in multidimensional spaces %J Sbornik. Mathematics %D 1975 %P 276-294 %V 25 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1975_25_2_a5/ %G en %F SM_1975_25_2_a5