%0 Journal Article %A POSITSELSKI, LEONID %T FLAT RING EPIMORPHISMS OF COUNTABLE TYPE %J Glasgow mathematical journal %D 2020 %P 383-439 %V 62 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S001708951900017X/ %R 10.1017/S001708951900017X %F 10_1017_S001708951900017X