TY - JOUR AU - Litovsky, I. TI - Minimal generators of submonoids of $A^\infty $ JO - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications PY - 1991 SP - 3 EP - 17 VL - 25 IS - 1 PB - EDP-Sciences UR - http://www.numdam.org/item/ITA_1991__25_1_3_0/ LA - en ID - ITA_1991__25_1_3_0 ER -