@article{DMGAA_2009_29_2_a4,
     author = {Chajda, Ivan and Eigenthaler, G\"unther},
     title = {Two constructions of {De} {Morgan} algebras and {De} {Morgan} quasirings},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {169--180},
     publisher = {mathdoc},
     volume = {29},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2009_29_2_a4/}
}