TY - JOUR TI - Comparative assessment of circular economy development in China’s four megacities: The case of Beijing, Chongqing, Shanghai and Urumqi PY - 2017 AU - Bin Guo AU - Yong Geng AU - Jingzheng Ren AU - Lei Zhu AU - Yaxuan Liu AU - Thomas Sterr T2 - Journal of Cleaner Production LK - http://www.sciencedirect.com/science/article/pii/S0959652617312313 DO - 10.1016/j.jclepro.2017.06.061 ER -