@article{
  author = {amiri, hossein, najafi nezhad, mahmood, sayadi, mohammad},
  title = {Risk Measurement in Value at Risk (VaR): Application of Levy GARCH models (Study of Chemical industries in Tehran Stock Exchange)},
  journal = {Financial Knowledge of Securities Analysis},
  year = {2021},
  volume = {14},
  number = {49},
  pages = {19-40},
  doi = {}
}