2010, SEMIGROUP FORUM, Fernandes,VH;Jesus,MM;Maltcev,V;Mitchell,JD

2010, MATHEMATICAL INTELLIGENCER, Cain,AJ

2010, MATHEMATISCHE NACHRICHTEN, Araujo,J;Dobson,E;Konieczny,J

2010, LINEAR ALGEBRA AND ITS APPLICATIONS, Fernandes,R;da Cruz,HF;Rodrigues,F

2011, SEMIGROUP FORUM, Fernandes,VH;Quinteiro,TM

2011, SEMIGROUP FORUM, Andre,J;Araujo,J;Konieczny,J

2011, SEMIGROUP FORUM, Araujo,J;Kinyon,M

2011, THEORETICAL COMPUTER SCIENCE, Gray,R;Malheiro,A

2011, EUROPEAN JOURNAL OF COMBINATORICS, Araujo,J;Kinyon,M;Konieczny,J

2011, COMMUNICATIONS IN ALGEBRA, Fernandes,VH;Quinteiro,TM