TY - JOUR AU - Klee, Victor TI - On a Question of Colin Clark Concerning Three Properties of Convex Sets(1) JO - Canadian mathematical bulletin PY - 1972 SP - 535 EP - 537 VL - 15 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-094-9/ DO - 10.4153/CMB-1972-094-9 ID - 10_4153_CMB_1972_094_9 ER -