%0 Journal Article %A V. I. Malykhin %T Products of ultrafilters and irresolvable spaces %J Sbornik. Mathematics %D 1973 %P 105-115 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1973_19_1_a6/ %G en %F SM_1973_19_1_a6