@article{
  author = {Payan, Ali, Hekmatnia, Mohsen},
  title = {Evaluating Cost Efficiency in Fuzzy Environment by Using Expected Value},
  journal = {Journal of System Management},
  year = {2017},
  volume = {3},
  issue = {2},
  pages = {77-90},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/918455}
}