TY - JOUR AU - POSITSELSKI, LEONID TI - FLAT RING EPIMORPHISMS OF COUNTABLE TYPE JO - Glasgow mathematical journal PY - 2020 SP - 383 EP - 439 VL - 62 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.1017/S001708951900017X/ DO - 10.1017/S001708951900017X ID - 10_1017_S001708951900017X ER -