Jessada Tariboon,  Nonlinear Equations with N-dimensional Telegraph Operator Iterated K-times.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2014, vol. 89(5). 806 - 808
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9998294.