On z -submonoids and z -codes M. Madonia; S. Salemi; T. Sportelli — 1991 RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
Complete subgraphs of bipartite graphs and applications to trace languages G. Guaiana; A. Restivo; S. Salemi — 1990 RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
Completing codes A. Restivo; S. Salemi; T. Sportelli — 1989 RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications