%0 Journal Article %A V. G. Boltyanskii %A P. S. Soltan %T Combinatorial geometry and convexity classes %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1978 %P 1-45 %V 33 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1978_33_1_a0/ %G en %F RM_1978_33_1_a0