WASET
    Nemat Abazari and  Reza Abazari,  Solution of Nonlinear Second-Order Pantograph Equations via Differential Transformation Method.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    October 2009, vol. 34(10). 864 - 868
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/10520.