@article{song2015urban, title = {Urban metabolism based on emergy and slack based model: A case study of Beijing, China} author = {Song, Tao; Cai, Jianming; Xu, Hui; Deng, Yu; Niu, Fangqu; Yang, Zhenshan; Du, Shanshan}, journal = {Chinese Geographical Science}, url = {https://doi.org/10.1007/s11769-014-0680-7}, doi = {10.1007/s11769-014-0680-7}, year = {2015} }