1. Achir, A., C. Sueur and G. Dauphin-Tanguy (2004). Ring bond graphs over non commutative rings application to variational bond graphs. IMAACA a part of Int. Med. Modeling Multiconference I3M, Genoa, Italy
2. Finite poles and zeros of linear systems: an intrinsic approach;Bourlès;Int. J. of Control,1984
3. Bond graph aided design of controlled systems;Dauphin-Tanguy;Simulation Practice and Theory,1999
4. Automatique et corps différentiels;Fliess;forum Math.,1989
5. Generalized controller canonical form for linear and nonlinear dynamics;Fliess;IEEE Transactions on Automatic Control,1990