%0 Journal Article %A Warren White %T A 2-complex is collapsible if and only if it admits a strongly convex metric %J Fundamenta Mathematicae %D 1970 %P 23-29 %V 68 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-68-1-23-29/ %R 10.4064/fm-68-1-23-29 %G en %F 10_4064_fm_68_1_23_29