@article{
  author = {Kiany, H., GHodrati, H.},
  title = {Distinction Between The Inter-Group And Intera-Group Efficiency Using Data Envelopment Analysis (DEA)},
  journal = {Future study Management},
  year = {2002},
  volume = {14},
  number = {55},
  pages = {71-81},
  doi = {}
}