TY - JOUR AU - M.V. Lawson TI - An equivalence theorem for inverse semigroups. JO - Semigroup forum PY - 1993 SP - 7 EP - 14 VL - 47 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SF_1993__47_2_135249/ ID - SF_1993__47_2_135249 ER -