Jinfeng Wang and  Yang Liu and  Hong Li,  A New Approximate Procedure Based On He’s Variational Iteration Method for Solving Nonlinear Hyperbolic Wave Equations.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2013, vol. 80(8). 1342 - 1345
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/16825.