%0 Journal Article %A Swardson, Mary Anne %T The Character of Certain Closed Sets %J Canadian journal of mathematics %D 1984 %P 38-57 %V 36 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1984-004-1/ %R 10.4153/CJM-1984-004-1 %F 10_4153_CJM_1984_004_1