@article{
  author = {taher, Farhad, Daneshian, Behrouz, Tohidi, ghasem, Hosseinzadeh lotfi, Farhad, Modarres Khiyabani, Farzin},
  title = {Estimation of undesirable outputs and desirable inputs along with efficiency improving for DMUs with interval data},
  journal = {Journal of New Researches in Mathematics},
  year = {2021},
  volume = {7},
  number = {1},
  pages = {65-72},
  doi = {}
}