%0 Journal Article %A Kato, Akio %T Union of Realcompact Spaces and Lindelöf Spaces %J Canadian journal of mathematics %D 1979 %P 1247-1268 %V 31 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1979-104-8/ %R 10.4153/CJM-1979-104-8 %F 10_4153_CJM_1979_104_8