@article{
  author = {shahamat nejad, mina, ziyae, babak, Ashrafi, Majid , Azma, Fereydoon },
  title = {The concept of Urban Entrepreneurship with  grounded Theory aproach  (case study:Tehran city) },
  journal = {Modiriat-e- farda},
  year = {2020},
  volume = {19},
  number = {63},
  pages = {123-144},
  doi = {}
}