TY - JOUR AU - Marek Lassak TI - Carathéodory's and Helly's dimensions of products of convexity structures JO - Colloquium Mathematicum PY - 1982 SP - 215 EP - 225 VL - 46 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-46-2-215-225/ DO - 10.4064/cm-46-2-215-225 LA - en ID - 10_4064_cm_46_2_215_225 ER -