TY - JOUR AU - Jacobs, Bart TI - Many-sorted coalgebraic modal logic : a model-theoretic study JO - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications PY - 2001 SP - 31 EP - 59 VL - 35 IS - 1 PB - EDP-Sciences UR - http://www.numdam.org/item/ITA_2001__35_1_31_0/ LA - en ID - ITA_2001__35_1_31_0 ER -