@article{JRAM_1976__285_151751,
     author = {Henner Kr\"oger},
     title = {Das {Assoziativgesetz} als {Kummutativit\"atsaxiom} in {Boole'schen} {Zwerchverb\"anden.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {53--58},
     publisher = {mathdoc},
     volume = {285},
     year = {1976},
     zbl = {0326.06008},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1976__285_151751/}
}