@article{MZ_1950__53_169189,
     author = {Arthur H. COPELAND},
     title = {Implicative {Boolean} {Algebra}},
     journal = {Mathematische Zeitschrift},
     pages = {285--290},
     publisher = {mathdoc},
     volume = {53},
     year = {1950},
     zbl = {0037.30602},
     url = {http://geodesic.mathdoc.fr/item/MZ_1950__53_169189/}
}