%0 Journal Article %A Chajda, Ivan %A Eigenthaler, Günther %T Two constructions of De Morgan algebras and De Morgan quasirings %J Discussiones Mathematicae. General Algebra and Applications %D 2009 %P 169-180 %V 29 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGAA_2009_29_2_a4/ %G en %F DMGAA_2009_29_2_a4