@article{
  author = {Shirouyezad, Hadi, Jouzdani, Javid, Khodadai-karimvand, Mazdak},
  title = {An Analysis of the COVID-19 Contagion Growth in European Countries},
  journal = {Iranian Journal of Optimization},
  year = {2020},
  volume = {12},
  number = {1},
  pages = {11-19},
  doi = {}
}