@article{
  author = {Arjomandfar, A., Khormali, O.},
  title = {On edge Co-PI indices},
  journal = {International Journal of Industrial Mathematics},
  year = {2014},
  volume = {6},
  issue = {1},
  pages = {59-64},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/846052}
}