1. G. Bitsoris, Sur l’existence des ensembles invariants polyhedraux des systemes lineaires, Internal Report 86015, LAAS-CNRS, Toulouse, France, 1986.
2. On the positive invariance of polyhedral sets for discrete-time systems;Bitsoris;Systems & Control Letters,1988
3. Une extension du lemme de Farkas et son application au probleme de regulation lineaire sous contraintes;Hennet;C.R.A.S. Serie I,1989
4. F. Blanchini, On the positive invariance of polyhedral sets, Internal Report, UDMI/39/89/RR, Dept. Mathematics and Informatics, University of Udine, Italy, 1990.
5. A linear programming algorithm for invariant polyhedral sets of discrete-time linear systems;ten Dam;Systems Control Letters,1995