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 25 April 2024]. Available from: https://publications.waset.org/pdf/724.