@article{
  author = {Del angizan, Sohrab},
  title = { Technological and science Clusters, as like a General Theorem},
  journal = { Roshd -e- Fanavari},
  year = {2006},
  volume = {2},
  issue = {5},
  pages = {1-10},
  doi = {},
  url = {https://rimag.ir/fa/Article/20267}
}