@article{
  author = {Shamsadini, Solmaz, Yazdani, Saeed, Moghaddasi, Reza},
  title = {Effects of R&D spending and Spill-Over on Agricultural TFP in Iran},
  journal = {International  Journal of Agricultural Science and Research},
  year = {2012},
  volume = {3},
  number = {1},
  pages = {39-49},
  doi = {}
}