@article{MASLO_2007__57_4_a2,
     author = {Rach\r{u}nek, Ji\v{r}{\'\i} and \v{S}alounov\'a, Dana},
     title = {Modal operators on bounded commutative residuated $\ell $-monoids},
     journal = {Mathematica slovaca},
     pages = {[321]},
     publisher = {mathdoc},
     volume = {57},
     number = {4},
     year = {2007},
     mrnumber = {2357828},
     zbl = {1150.06016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_2007__57_4_a2/}
}