TY - JOUR AU - T.E. Hays TI - Compact normal bands of groups. JO - Semigroup forum PY - 1975 SP - 67 EP - 75 VL - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SF_1975__10_134100/ ID - SF_1975__10_134100 ER -