Li Jiang and  Baoguang Tian,  Preconditioned Mixed-Type Splitting Iterative Method For Z-Matrices.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    February 2011, vol. 50(2). 141 - 144
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/12041.