%0 Journal Article %A M.E. Houle %T Theorems on the Existence of Separating Surfaces. %J Discrete & computational geometry %D 1991 %P 49-56 %V 6 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131142/ %F DCG_1991__6_4_131142