%0 Journal Article %A P. Zieschang %T A theorem of O'Nan for finite linear spaces %J Colloquium Mathematicum %D 1993 %P 13-24 %V 65 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-65-1-13-24/ %R 10.4064/cm-65-1-13-24 %G en %F 10_4064_cm_65_1_13_24