WASET
    Chao Yuan and  Bao Guang Tian,  The Relative Efficiency Based on the MSE in Generalized Ridge Estimate .   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2016, vol. 117(9). 463 - 466
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10005775.