%0 Journal Article %A I. A. Bogaevsky %T Singularities of Convex Hulls of Three-Dimensional Hypersurfaces %J Informatics and Automation %D 1998 %P 81-100 %V 221 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1998_221_a4/ %G ru %F TRSPY_1998_221_a4