WASET
    B. M. Mohan and  Sanjeeb Kumar Kar,  Orthogonal Functions Approach to LQG Control.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2012, vol. 68(8). 1026 - 1031
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/6618.