2012, Open Journal of Discrete Mathematics, Sousa,T

2012, SEMIGROUP FORUM, Malheiro,A

2012, INTERNATIONAL JOURNAL OF ALGEBRA AND COMPUTATION, Cain,AJ;Ruskuc,N;Thomas,RM

2012, JOURNAL OF K-THEORY, Cisinski,DC;Tabuada,G

2012, LINEAR ALGEBRA AND ITS APPLICATIONS, Fernandes,R;da Cruz,HF

2012, LINEAR ALGEBRA AND ITS APPLICATIONS, da Cruz,HF;Fernandes,R

2012, REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS, Casimiro,AC;Rodrigo,C

2012, SEMIGROUP FORUM, Cain,AJ;Gray,R;Ruskuc,N

2012, COMPOSITIO MATHEMATICA, Marcolli,M;Tabuada,G

2012, INTERNATIONAL JOURNAL OF ALGEBRA AND COMPUTATION, Cain,AJ;Maltcev,V