%0 Journal Article %A V. G. Kanovei %A V. A. Lyubetsky %T Models of set theory in which the separation theorem fails %J Izvestiya. Mathematics %D 2021 %P 1181-1219 %V 85 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2021_85_6_a5/ %G en %F IM2_2021_85_6_a5