%0 Journal Article %A R. W. Knight %T A topological application of flat morasses %J Fundamenta Mathematicae %D 2007 %P 45-66 %V 194 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm194-1-3/ %R 10.4064/fm194-1-3 %G en %F 10_4064_fm194_1_3