@article{
  author = {جعفرنیا, M., اسماعیلی, A.},
  title = {Application of environmental impact analysis of technical efficiency: A case study of Shiraz fattening units of beef cattle},
  journal = {Agricultural Economics Research},
  year = {2013},
  volume = {5},
  number = {2},
  pages = {151-164},
  doi = {}
}