@article{
  author = {Babolian, E, Masouri, Z., Hatamzadeh-Varmazyar, S.},
  title = {A Direct Method for Numerically Solving
 Integral Equations System Using Orthogonal
 Triangular Functions},
  journal = {International Journal of Industrial Mathematics},
  year = {2009},
  volume = {1},
  issue = {2},
  pages = {135-145},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/846115}
}