@article{
  author = {Tavassoli-Kajani, M., Kargaran-Dehkordi, L., Hadian-Jazi, Sh.},
  title = {A three-step method based on Simpson's
3/8 rule for solving system of nonlinear
Volterra integral equations},
  journal = {Theory of Approximation and Applications},
  year = {2013},
  volume = {7},
  number = {2},
  pages = {105-130},
  doi = {}
}