%0 Journal Article %A Rachůnek, Jiří %A Šalounová, Dana %T Modal operators on bounded commutative residuated $\ell $-monoids %J Mathematica slovaca %D 2007 %P 321-332 %V 57 %N 4 %U http://geodesic.mathdoc.fr/item/MASLO_2007_57_4_a2/ %G en %F MASLO_2007_57_4_a2