TY - JOUR AU - VeselĂ˝, Libor TI - For a dense set of equivalent norms, a non-reflexive Banach space contains a triangle with no Chebyshev center JO - Commentationes Mathematicae Universitatis Carolinae PY - 2001 SP - 153 EP - 158 VL - 42 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_2001__42_1_a10/ LA - en ID - CMUC_2001__42_1_a10 ER -