%0 Journal Article %A Kovář, Tomáš %T On (weak) zero-fixing isometries in dually residuated lattice ordered semigroups %J Mathematica slovaca %D 2000 %P 123-125 %V 50 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_2000__50_2_a1/ %G en %F MASLO_2000__50_2_a1