%0 Journal Article %A P. Valtr %T Convex Independent Sets and 7-Holes in Restricted Planar Point Sets. %J Discrete & computational geometry %D 1992 %P 135-152 %V 7 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DCG_1992__7_4_131186/ %F DCG_1992__7_4_131186