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1998, ORDER-A JOURNAL ON THE THEORY OF ORDERED SETS AND ITS APPLICATIONS, Blyth,TS;Silva,HJ

1997, SEMIGROUP FORUM, Fernandes,VH

1999, JOURNAL OF LOGIC AND COMPUTATION, Kahle,R

1999, Logic and Foundations of Mathematics, Jäger,G;Kahle,R;Strahm,T

1999, SEMIGROUP FORUM, Bentz,W;Bulman Fleming,S

1999, ALGEBRA UNIVERSALIS, Bentz,W

1999, LINEAR ALGEBRA AND ITS APPLICATIONS, Fernandes,R

1999, COMMUNICATIONS IN ALGEBRA, Silva,HJ

1999, JOURNAL OF SYMBOLIC LOGIC, Jager,G;Kahle,R;Setzer,A;Strahm,T