TY - JOUR AU - Kovář, Tomáš TI - Two remarks on dually residuated lattice ordered semigroups JO - Mathematica slovaca PY - 1999 SP - 17 EP - 18 VL - 49 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MASLO_1999__49_1_a1/ LA - en ID - MASLO_1999__49_1_a1 ER -