@article{
  author = {Pajouhesh, Parnush},
  title = {The study of sociological causes leading to the downfall of Jamshid’s empire in the light of Ibn Khaldun’s theory},
  journal = {The Journal of Epicliterature},
  year = {2021},
  volume = {17},
  number = {2},
  pages = {41-57},
  doi = {}
}