Joe Imae and  Kenjiro Shinagawa and  Tomoaki Kobayashi and  Guisheng Zhai,  A New Approach to the Approximate Solutions of Hamilton-Jacobi Equations.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    March 2011, vol. 51(3). 437 - 440
    [viewed 24 January 2020]. Available from: https://publications.waset.org/pdf/14467.