@article{10_4153_CJM_1980_055_2, author = {Breen, Marilyn}, title = {(D-2)-Extreme {Points} and a {Helly-Type} {Theorem} for {Starshaped} {Sets}}, journal = {Canadian journal of mathematics}, pages = {703--713}, year = {1980}, volume = {32}, number = {3}, doi = {10.4153/CJM-1980-055-2}, url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-055-2/} }