@article{
  author = {Ghaffari, Seyed Mohammad Khaled},
  title = {A Survey on the Structure of Passive Sentences and
Predictive and Non-predictive forms of Passives},
  journal = {فصلنامه زبان و ادب فارسی},
  year = {2013},
  volume = {5},
  number = {16},
  pages = {109-132},
  doi = {}
}