paktinat, H., abaspour, R., ashournezhad, G., esmaeilzadeh, M., & hoshmand, F. (2016). A new Approach to Combine Multi- Criteria Decision Making Systems and Gray Clustering Method for Spatial Optimization of Environmental Monitoring Stations (Case Study: Naybandan Wildlife Refuge). Environmental Researches, 6(11), 41-79.

paktinat, H., abaspour, R., ashournezhad, G., esmaeilzadeh, M., & hoshmand, F. "A new Approach to Combine Multi- Criteria Decision Making Systems and Gray Clustering Method for Spatial Optimization of Environmental Monitoring Stations (Case Study: Naybandan Wildlife Refuge)", Environmental Researches, 6, 11, 2016, 41-79.

paktinat H., abaspour R., ashournezhad G., esmaeilzadeh M., hoshmand F. (2016). 'A new Approach to Combine Multi- Criteria Decision Making Systems and Gray Clustering Method for Spatial Optimization of Environmental Monitoring Stations (Case Study: Naybandan Wildlife Refuge)', Environmental Researches, 6(11), pp. 41-79.

H. paktinat, R. abaspour, G. ashournezhad, M. esmaeilzadeh & F. hoshmand, "A new Approach to Combine Multi- Criteria Decision Making Systems and Gray Clustering Method for Spatial Optimization of Environmental Monitoring Stations (Case Study: Naybandan Wildlife Refuge)," Environmental Researches, 6 11 (2016): 41-79,

paktinat H., abaspour R., ashournezhad G., esmaeilzadeh M., hoshmand F. A new Approach to Combine Multi- Criteria Decision Making Systems and Gray Clustering Method for Spatial Optimization of Environmental Monitoring Stations (Case Study: Naybandan Wildlife Refuge). Environmental Researches. 2016;6(11):41-79 (In Persian).