Heydari, Moslem, Afshin Honarbakhsh, Mahdi Pajoohesh, and Maryam Zangiabadi. 2018. “Land Use Optimization Using the Fuzzy Mathematical-Spatial Approach: A Case Study of Chelgerd Watershed, Iran”. Journal of Environmental Engineering and Landscape Management 26 (2):75-87. https://doi.org/10.3846/16486897.2017.1350688.