@article{
  author = {Alinezhad, A., Zohrebandian, M., Dehdar, F.},
  title = {Portfolio Selection using Data Envelopment Analysis with common weights},
  journal = {Iranian Journal of Optimization},
  year = {2010},
  volume = {4},
  number = {1},
  pages = {282-291},
  doi = {}
}