@article{
  author = {.Razavyan, Sh},
  title = {A Method for Designing Optimal Systems for the Centralized Structures in DEA},
  journal = {Journal of New Researches in Mathematics},
  year = {2015},
  volume = {1},
  issue = {1},
  pages = {15-21},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/798722}
}