@article{
  author = {Ahmadi, Manijeh},
  title = {Identifying Challenges to Development of Distance Education from the Perspective of Payame Noor University Professors},
  journal = { Quarterly Journal of Training and Development of Human Resources},
  year = {2020},
  volume = {7},
  number = {24},
  pages = {0-0},
  doi = {}
}