@article{
  author = {Jahanbeigi, A., Kalantari, M. E.},
  title = {Forecasting the Number of Telecommunication Services’ Subscribers for the Next Years in the Country},
  journal = {Nashriyyah -i Muhandisi -i Barq va Muhandisi -i Kampyutar -i Iran},
  year = {2008},
  volume = {6},
  number = {2},
  pages = {111-118},
  doi = {}
}