WASET
    Integral square error and  Least-squares and  Markovparameters and  Moment matching and  Order reduction.,   Order Reduction by Least-Squares Methods about General Point ''a''.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2007, vol. 2(2). 268 - 275
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/12875.