J. Barbot, D. Boutat, and T. Floquet, An observation algorithm for nonlinear systems with unknown inputs, Automatica V 45, N8, 1970.
URL : https://hal.archives-ouvertes.fr/inria-00391819

L. Boutat-baddas, J. P. Barbot, D. Boutat, and R. Tauleigne, Sliding mode observers and observability singularity in chaotic synchronization, Mathematical Problems in Engineering, vol.2004, issue.1, 2004.
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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.
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M. Frunzete, A. Luca, A. Vlad, and J. Barbot, Observability and singularity in the context of the R? ossler map, U.P.B. Sci. Bull., Series A, vol.74, issue.1, pp.2012-1223

M. Frunzete, J. Barbot, and C. Letellier, Influence of the singular manifold of non observable states in reconstructing chaotic attractors, Physical Review E, vol.86, issue.2, 2012.
URL : https://hal.archives-ouvertes.fr/hal-00750595

J. P. Gauthier, H. Hammouri, and S. Othman, A simple observer for nonlinear systems applications to bioreactors, Automatic Control, IEEE Transactions on, vol.37, issue.6, pp.875-880

G. Grassi and D. A. Miller, Theory and experimental realization of observer-based discrete-time hyperchaos synchronization, IEEE Transactions on Circuits and SystemsI: Fundamental Theory and Applications, 2002.
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R. Hermann and A. Krenner, Nonlinear controllability and observability, IEEE Transactions on Automatic Control, 1977.
DOI : 10.1109/TAC.1977.1101601

M. L. Hernault, J. Barbot, and A. Ouslimani, Feasility of Analog Realization of a Sliding-Mode Observer: Application to Data Transmission, in Circuits and Systems I: Regular Papers, IEEE Transactions on, issue.2, pp.55-614, 2008.

A. Isidori, Nonlinear Control Systems, 2001.

C. Letellier, L. A. Aguirre, and J. Maquet, Relation between observability and differential embeddings for nonlinear dynamics, Physical Review E, vol.71, issue.6, p.66213, 2005.
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G. M. Maggio, O. De-feo, and M. P. Kennedy, Nonlinear analysis of the Colpitts oscillator and applications to design, IEEE Transactions on Circuits and Systems-I: Fundamental Theory and Applications, 1999.
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P. Saha and S. H. Stragatz, The Birth of Period Three, Mathematics Magazine, pp.42-47, 1995.
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G. Zheng, M. Ghanes, and J. Barbot, Secure data trasnmission based on multi-input multi-output delayed chaotic system