@article{
  author = {Ghasemi, M., Azizi, A., Fardi, M.},
  title = {Numerical solution of seven-order Sawada-Kotara
equations by homotopy perturbation method},
  journal = {Theory of Approximation and Applications},
  year = {2013},
  volume = {7},
  issue = {1},
  pages = {69-77},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/909895}
}