TY - JOUR TI - Emergy analysis of the urban metabolism of Beijing PY - 2011 AU - Yan Zhang AU - Zhifeng Yang AU - Gengyuan Liu AU - Xiangyi Yu T2 - Ecological Modelling LK - http://www.sciencedirect.com/science/article/pii/S0304380010004886 DO - 10.1016/j.ecolmodel.2010.09.017 ER -