TY - JOUR AU - Jakubík, Ján TI - On filters of ordered semigroups JO - Czechoslovak Mathematical Journal PY - 1993 SP - 519 EP - 522 VL - 43 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1993.128415/ DO - 10.21136/CMJ.1993.128415 LA - en ID - 10_21136_CMJ_1993_128415 ER -