@article{BSL_2016_45_2_a4,
     author = {Indrzejczak, Andrzej},
     title = {Simple {Decision} {Procedure} for {S5} in {Standard} {Cut-Free} {Sequent} {Calculus}},
     journal = {Bulletin of the Section of Logic},
     publisher = {mathdoc},
     volume = {45},
     number = {2},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BSL_2016_45_2_a4/}
}