@article{MASLO_1999_49_1_a1,
     author = {Kov\'a\v{r}, Tom\'a\v{s}},
     title = {Two remarks on dually residuated lattice ordered semigroups},
     journal = {Mathematica slovaca},
     pages = {17--18},
     year = {1999},
     volume = {49},
     number = {1},
     mrnumber = {1804468},
     zbl = {0943.06007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1999_49_1_a1/}
}