@article{CTGDC_1995__36_2_127_0,
     author = {Niefield, Susan B. and Sun, Shu-Hao},
     title = {Algebraic de {Morgan's} laws for non-commutative rings},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {127--140},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {36},
     number = {2},
     year = {1995},
     mrnumber = {1338467},
     zbl = {0830.16021},
     language = {en},
     url = {http://archive.numdam.org/item/CTGDC_1995__36_2_127_0/}
}