M. Darouach, M. Zasadzinski, and S. J. Xu, Full-order observers for linear systems with unknown inputs, IEEE Transactions on Automatic Control, vol.39, issue.3, pp.606-609, 1994.
DOI : 10.1109/9.280770

URL : https://hal.archives-ouvertes.fr/hal-00098125

T. Floquet, C. Edwards, and S. Spurgeon, On sliding mode observers for systems with unknown inputs, Int. J. Adapt. Control Signal Process, vol.21, pp.8-9, 2007.
URL : https://hal.archives-ouvertes.fr/inria-00171472

Y. Guan and M. Saif, A novel approach to the design of unknown input observers, IEEE Transactions on Automatic Control, vol.36, issue.5, pp.871-875, 1992.
DOI : 10.1109/9.76372

E. Yip and R. Sincovec, Solvability, controllability, and observability of continuous descriptor systems, IEEE Transactions on Automatic Control, vol.26, issue.3, pp.702-707, 1981.
DOI : 10.1109/TAC.1981.1102699

M. Darouach and M. Boutayeb, Design of observers for descriptor systems, IEEE Transactions on Automatic Control, vol.40, issue.7, pp.1323-1327, 1995.
DOI : 10.1109/9.400467

URL : https://hal.archives-ouvertes.fr/hal-00922599

M. Darouach and L. Boutat-baddas, Observers for a Class of Nonlinear Singular Systems, IEEE Transactions on Automatic Control, vol.53, issue.11, pp.2627-2633, 2008.
DOI : 10.1109/TAC.2008.2007868

URL : https://hal.archives-ouvertes.fr/hal-00343977

D. Cobb, Controllability, observability, and duality in singular systems, IEEE Transactions on Automatic Control, vol.29, issue.12, pp.1076-1082, 1984.
DOI : 10.1109/TAC.1984.1103451

M. Hou and P. Müller, Causal observability of descriptor systems, IEEE Transactions on Automatic Control, vol.44, issue.1, pp.158-163, 1999.
DOI : 10.1109/9.739111

D. Chu and V. Mehrmann, Disturbance decoupled observer design for descriptor systems, Systems & Control Letters, vol.38, issue.1, pp.37-48, 1999.
DOI : 10.1016/S0167-6911(99)00045-6

D. Koenig, Unknown input proportional multiple-integral observer design for linear descriptor systems: application to state and fault estimation, IEEE Transactions on Automatic Control, vol.50, issue.2, pp.212-217, 2005.
DOI : 10.1109/TAC.2004.841889

URL : https://hal.archives-ouvertes.fr/hal-00152225

M. Darouach, M. Zasadzinski, and M. Hayar, Reduced-order observer design for descriptor systems with unknown inputs, IEEE Transactions on Automatic Control, vol.41, issue.7, pp.1068-1072, 1996.
DOI : 10.1109/9.508918

URL : https://hal.archives-ouvertes.fr/hal-00098122

T. Kaczorek, Polynomial and Rational Matrices Applications in Dynamical Systems Theory, ser. Communications and control engineering, 2007.

H. L. Trentelman, A. A. Stoorvogel, and M. L. Hautus, Control theory for linear systems, ser. Communications and control engineering, 2001.

M. Hautus, Strong detectability and observers, Linear Algebra and its Applications, vol.50, pp.353-368, 1983.
DOI : 10.1016/0024-3795(83)90061-7

URL : http://doi.org/10.1016/0024-3795(83)90061-7

S. Diop and M. Fliess, Nonlinear observability, identifiability, and persistent trajectories, [1991] Proceedings of the 30th IEEE Conference on Decision and Control, pp.714-719, 1991.
DOI : 10.1109/CDC.1991.261405

B. P. Molinari, A strong controllability and observability in linear multivariable control, IEEE Transactions on Automatic Control, vol.21, issue.5, pp.761-764, 1976.
DOI : 10.1109/TAC.1976.1101364

F. J. Bejarano, L. Fridman, and A. Poznyak, Unknown Input and State Estimation for Unobservable Systems, SIAM Journal on Control and Optimization, vol.48, issue.2, pp.1155-1178, 2009.
DOI : 10.1137/070700322

A. Levant, Higher-order sliding modes, differentiation and output-feedback control, International Journal of Control, vol.76, issue.9-10, pp.924-941, 2003.
DOI : 10.1080/0020717031000099029

M. Mboup, C. Join, and M. Fliess, Numerical differentiation with annihilators in noisy environment, Numerical Algorithms, vol.14, issue.12, pp.439-467, 2009.
DOI : 10.1007/s11075-008-9236-1

URL : https://hal.archives-ouvertes.fr/inria-00319240

F. Bejarano and L. Fridman, High order sliding mode observer for linear systems with unbounded unknown inputs, International Journal of Control, vol.15, issue.9, pp.1920-929, 2010.
DOI : 10.1109/TAC.1987.1104530