Saman M. Siddiqui and  Fang Jiancheng,  Robust Integrated Navigation of a Low Cost System.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2012, vol. 61(1). 133 - 136
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/6208.