2008, Journal of the Australian Mathematical Society, Cain,AJ;Robertson,EF;Ruskuc,N

2008, DUKE MATHEMATICAL JOURNAL, Tabuada,G

2008, DISCRETE MATHEMATICS, Sousa,T

2008, LINEAR ALGEBRA AND ITS APPLICATIONS, Johnson,CR;Duarte,AL;Saiago,CM

2008, LINEAR ALGEBRA AND ITS APPLICATIONS, Fernandes,R;Gomes,H;Martins,EA

2008, JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Casimiro,AC;Porras,JMM;Martin,FJP

2008, COMMUNICATIONS IN ALGEBRA, Blyth,TS;Silva,HJ

2008, ALGEBRA COLLOQUIUM, Fernandes,VH

2009, LINEAR & MULTILINEAR ALGEBRA, Fernandes,R

2009, SEMIGROUP FORUM, Malheiro,A