TY - JOUR AU - HIGGINS, PETER M. TI - EMBEDDING IN A FINITE 2-GENERATOR SEMIGROUP JO - Glasgow mathematical journal PY - 2017 SP - 61 EP - 75 VL - 59 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089516000045/ DO - 10.1017/S0017089516000045 ID - 10_1017_S0017089516000045 ER -