@article{
  author = {Saif, Mohammad Hasan, Fathi, Reza},
  title = {A Causal Model of Acceptance and Utilization to Virtual Learning among Staffs: The Role Task-Technology Fit, self- Efficacy and Subjective Norm},
  journal = { Quarterly Journal of Training and Development of Human Resources},
  year = {2017},
  volume = {4},
  number = {12},
  pages = {1-10},
  doi = {}
}