%0 Journal Article %A Potoczny, Henry %T Sum Theorems for Countably Paracompact Spaces %J Canadian journal of mathematics %D 1973 %P 706-711 %V 25 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-072-5/ %R 10.4153/CJM-1973-072-5 %F 10_4153_CJM_1973_072_5