@article{
  author = {Ahmadzadeh, R., Kordrostami, S., Amirteimoori, A.r.},
  title = {A Heuristic Method on Extended Two-Stage Network Structures},
  journal = {Journal of New Researches in Mathematics},
  year = {2017},
  volume = {3},
  number = {3},
  pages = {91-98},
  doi = {}
}