1999, Logic and Foundations of Mathematics, J√§ger,G;Kahle,R;Strahm,T
1999, SEMIGROUP FORUM, Bentz,W;Bulman Fleming,S
1999, ALGEBRA UNIVERSALIS, Bentz,W
1999, Logic and Foundations of Mathematics, J√§ger,G;Kahle,R;Strahm,T
1999, SEMIGROUP FORUM, Bentz,W;Bulman Fleming,S
1999, ALGEBRA UNIVERSALIS, Bentz,W