@article{zhu2019ecological, title = {Ecological network analysis of urban energy metabolic system—A case study of Beijing} author = {Zhu, Xueting; Mu, Xianzhong; Hu, Guangwen}, journal = {Ecological Modelling}, url = {http://www.sciencedirect.com/science/article/pii/S0304380019301619}, doi = {10.1016/j.ecolmodel.2019.04.016}, year = {2019} }