@article{MABA_1988_2_2_a9,
     author = {Zarko Mijajlovic},
     title = {Quantifierfree {Boolean} {Formulas} and their {Relation} to {Modal} {Logic} {S5}},
     journal = {Mathematica balkanica},
     pages = {192},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/MABA_1988_2_2_a9/}
}