Saman M. Siddiqui and  Fang Jiancheng,  Navigation and Self Alignment of Inertial Systems using Nonlinear H∞ Filters.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2011, vol. 59(11). 1446 - 1451
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10361.