Jay Singh and  Kalyan Chatterjee and  C. B. Vishwakarma,  System Reduction by Eigen Permutation Algorithm and Improved Pade Approximations.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    February 2014, vol. 85(1). 180 - 184
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9997666.