1. Minimal representations of implicit linear systems;Aplevich;Automatica,1985
2. Implicit Linear Systems;Aplevich,1991
3. Non observable and redundant spaces for implicit descriptions;Bonilla,1991
4. Geometric characterizations of external minimality for implicit descriptions;Bonilla,1993
5. Geometric interpretation of the zeros and of the hidden modes of a constant linear system via a renewed realization theory;Fliess,1989