TY - JOUR AU - S. Bulman-Fleming AU - k. McDowell TI - A characterization of left cancellative monoids by flatness properties. JO - Semigroup forum PY - 1990 SP - 109 EP - 112 VL - 40 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SF_1990__40_1_135009/ ID - SF_1990__40_1_135009 ER -