2002, SEMIGROUP FORUM, Araujo,J

2002, PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY, Araujo,J

2002, ARCHIVE FOR MATHEMATICAL LOGIC, Oitavem,I

2002, Electronic Journal of Linear Algebra, Johnson,CR;Saiago,CM

2002, HISTORIA MATHEMATICA, Peckhaus,V;Kahle,R

2002, SYNTHESE, Kahle,R

2002, Semigroups, Algorithms, Automata and Languages, FERNANDES,VH

2003, SEMIGROUP FORUM, Araujo,J

2003, FINITE FIELDS AND THEIR APPLICATIONS, Brison,OJ;Nogueira,JE

2003, LINEAR ALGEBRA AND ITS APPLICATIONS, Johnson,CR;Duarte,AL;Saiago,CM;Sutton,BD;Witt,AJ