%0 Journal Article %A Jasem, Milan %T Weak isometries and direct decompositions of dually residuated lattice ordered semigroups %J Mathematica slovaca %D 1993 %P 119-136 %V 43 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1993__43_2_a1/ %G en %F MASLO_1993__43_2_a1