@article{
  author = {Rezai Balf, F., Shahverdi, R., Kamalgharibi Mofrad, K.},
  title = {Ranking of DMUs on interval data by imposing a minimum weight restriction in DEA},
  journal = {International Journal of Industrial Mathematics},
  year = {2009},
  volume = {1},
  number = {4},
  pages = {333-342},
  doi = {}
}