%0 Journal Article %A Horst Martini %A Zokhrab Mustafaev %T On unit balls and isoperimetrices in normed spaces %J Colloquium Mathematicum %D 2012 %P 133-142 %V 127 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm127-1-10/ %R 10.4064/cm127-1-10 %G en %F 10_4064_cm127_1_10