@article{
  author = {Rafaati, F., Azarin Far, Y., Zad, M., Barabari, A., Kazem Nejad, M.},
  title = {Technical, Allocative and Economic Efficiency of Cotton growing Farmers in Golestan Province : Case Study of Gorgan},
  journal = {Agricultural Economics Research},
  year = {2011},
  volume = {3},
  number = {1},
  pages = {121-141},
  doi = {}
}