TY - JOUR AU - G.M.S. Gomes TI - R-unipotent congruences on regular semigroups. JO - Semigroup forum PY - 1985 SP - 265 EP - 280 VL - 31 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SF_1985__31_134753/ ID - SF_1985__31_134753 ER -