paktinat,H. , abaspour,R. , ashournezhad,G. , esmaeilzadeh,M. and 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. , and 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 and 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.