@article{
  author = {Hosseinzadeh, Akbar, Ahmadi, Manijeh, Moradi Mofrad, Samira, Ghasemi, Maryam},
  title = {Optimum Location of Fuel Stations (CNG) Using fuzzy and AHP (Case Study: Zanjan)},
  journal = {Journal of Geography and Environmental  Studies},
  year = {2018},
  volume = {6},
  number = {24},
  pages = {7-20},
  doi = {}
}