Analysis of Resource and Emission Impacts: An Emergy-Based Multiple Spatial Scale Framework for Urban Ecological and Economic Evaluation. - Gengyuan Liu; Zhifeng Yang; Bin Chen; Lixiao Zhang (Entropy, 2011)

Urban Ecosystem Health Assessment and Its Application in Management: A Multi-Scale Perspective. - Meirong Su; Zhifeng Yang; Bin Chen; Gengyuan Liu; Yan Zhang; Lixiao Zhang; Linyu Xu; Yanwei Zhao (Entropy, 2013)