@article{
  author = {Ahmadi, Ferial, Bemanian, Mohammadreza, Sadeghi, Alireza},
  title = {Presenting Pattern of Sustainable Tourism Development of Waterfall  Protected Area},
  journal = {Journal of Environmental Science and Technology},
  year = {2013},
  volume = {15},
  number = {1},
  pages = {151-165},
  doi = {}
}