Kazuo Komatsu and Hitoshi Takata, Design of Nonlinear Observer by Using Augmented Linear System based on Formal Linearization of Polynomial Type. journal = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology. November 2009, vol. 35(11). 2523 - 2526 [viewed 21 September 2024]. Available from: https://publications.waset.org/pdf/724.