1. Foundation of Mechanics;Abraham,1966
2. Observer error linearization multi-output depending;Boutat;IEEE CDC,2006
3. Observability quadratic characteristic numbers;Chabraoui;IEE CDC,2003
4. Observer synthesis for state-affine systems. In;Hammouri;Proc. of IEEE CDC,1990
5. Bilinearization up to the output injection;Hammouri;System and Control Letters,1988