%0 Journal Article %A W. Comfort %T A theorem of Stone-Čech type, and a theorem of Tychonoff type, without the axiom of choice; and their realcompact analogues %J Fundamenta Mathematicae %D 1968 %P 97-110 %V 63 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-63-1-97-110/ %R 10.4064/fm-63-1-97-110 %G en %F 10_4064_fm_63_1_97_110