%0 Journal Article %A Breen, Marilyn %T (D-2)-Extreme Points and a Helly-Type Theorem for Starshaped Sets %J Canadian journal of mathematics %D 1980 %P 703-713 %V 32 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-055-2/ %R 10.4153/CJM-1980-055-2 %F 10_4153_CJM_1980_055_2