N. Aghannan and P. Rouchon, On invariant asymptotic observers, Proceedings of the 41st IEEE Conference on Decision and Control, 2002., pp.1479-1484, 2002.
DOI : 10.1109/CDC.2002.1184728

N. Aghannan and P. Rouchon, An intrinsic observer for a class of lagrangian systems, IEEE Transactions on Automatic Control, vol.48, issue.6, pp.936-945, 2003.
DOI : 10.1109/TAC.2003.812778

A. M. Bloch, P. S. Krishnaprasad, J. E. Marsden, and R. Murray, Nonholonomic mechanical systems with symmetry, Archive for Rational Mechanics and Analysis, vol.5, issue.Suppl. 2, pp.21-99, 1996.
DOI : 10.1007/BF02199365

F. Fagnani and J. Willems, Representations of Symmetric Linear Dynamical Systems, SIAM Journal on Control and Optimization, vol.31, issue.5, pp.1267-1293, 1993.
DOI : 10.1137/0331060

J. W. Grizzle and S. I. Marcus, The structure of nonlinear control systems possessing symmetries, IEEE Transactions on Automatic Control, vol.30, issue.3, pp.248-258, 1985.
DOI : 10.1109/TAC.1985.1103927

B. Jakubczyk, Symmetries of nonlinear control systems and their symbols, Canadian Math. Conf. Proceed, pp.183-198, 1998.

W. S. Koon and J. E. Marsden, Optimal Control for Holonomic and Nonholonomic Mechanical Systems with Symmetry and Lagrangian Reduction, SIAM Journal on Control and Optimization, vol.35, issue.3, pp.901-929, 1997.
DOI : 10.1137/S0363012995290367

. Ph, P. Martin, J. Rouchon, and . Rudolph, Invariant tracking. ESAIM : Control, Optimisation and Calculus of Variations, pp.1-13, 2004.

P. J. Olver, Equivalence, Invariants and Symmetry, 1995.
DOI : 10.1017/CBO9780511609565

W. Respondek and I. A. , Nonlinearizable single-input control systems do not admit stationary symmetries, Systems & Control Letters, vol.46, issue.1, pp.1-16, 2002.
DOI : 10.1016/S0167-6911(01)00197-9