@article{10_21136_CMJ_1986_102087,
     author = {Hansoul, Georges},
     title = {Boolean algebras with a unary operator},
     journal = {Czechoslovak Mathematical Journal},
     pages = {232--237},
     publisher = {mathdoc},
     volume = {36},
     number = {2},
     year = {1986},
     doi = {10.21136/CMJ.1986.102087},
     mrnumber = {831311},
     zbl = {0613.06008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1986.102087/}
}