@article{BSL_2015_44_1-2_a7,
     author = {Dzik, Wojciech and Wr\'obel, Beniamin},
     title = {Unifiability and {Structural} {Completeness} in {Relation} {Algebras} and in {Products} of {Modal} {Logic} {S5}},
     journal = {Bulletin of the Section of Logic},
     publisher = {mathdoc},
     volume = {44},
     number = {1-2},
     year = {2015},
     url = {http://geodesic.mathdoc.fr/item/BSL_2015_44_1-2_a7/}
}