@article{
  author = {, , , },
  title = {The comparative Study of Back Channel Response in Persian and English Telephone Conversation},
  journal = {Pazhūhish-i Źabān  va Adabiyyāt-i Farsī},
  year = {2012},
  volume = {9},
  number = {23},
  pages = {1-10},
  doi = {}
}