TY - JOUR AU - Straubing, Howard TI - Relational morphisms and operations on recognizable sets JO - RAIRO. Informatique théorique PY - 1981 SP - 149 EP - 159 VL - 15 IS - 2 PB - EDP-Sciences UR - http://www.numdam.org/item/ITA_1981__15_2_149_0/ LA - en ID - ITA_1981__15_2_149_0 ER -