TY - JOUR AU - G. Lallement TI - Semigroups and combinatorial applications - Perrot, J.F. JO - Semigroup forum PY - 1982 SP - 385 EP - 390 VL - 24 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SF_1982__24_134559/ ID - SF_1982__24_134559 ER -