WASET
    Jason Sheng-Hong Tsai and  Faezeh Ebrahimzadeh and  Min-Ching Chung and  Shu-Mei Guo and  Leang-San Shieh and  Tzong-Jiy Tsai and  Li Wang,  Optimal Linear Quadratic Digital Tracker for the Discrete-Time Proper System with an Unknown Disturbance.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 113(5). 929 - 935
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10004637.