@article{
  author = {Sedighi Hassan Kiyadeh, Majid, Saati Mohtadi, Saber, Kordrostami, Sohrab},
  title = {Determining the Russell Technical Efficiency of measure in the Presence of Flexible Factors based on slack variables},
  journal = {Journal of New Researches in Mathematics},
  year = {2021},
  volume = {6},
  issue = {6},
  pages = {5-16},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/797901}
}