April 24, 2024 Gan, X., I. C. Fernandez, J. Guo, M. C. Wilson, Y. Zhao, B. Zhou and J. Wu. 2017. When to use what: Methods for weighting and aggregating sustainability indicators. Ecological Indicators 81(Oct):491-502. Home » Gan, X., I. C. Fernandez, J. Guo, M. C. Wilson, Y. Zhao, B. Zhou and J. Wu. 2017. When to use what: Methods for weighting and aggregating sustainability indicators. Ecological Indicators 81(Oct):491-502.