@article{
  author = {, , Hessampour, Saeed},
  title = {A Survey to the Study of Khayyam during the  14th Century},
  journal = {Pazhūhish-i Źabān  va Adabiyyāt-i Farsī},
  year = {2009},
  volume = {7},
  number = {14},
  pages = {1-10},
  doi = {}
}