TY - JOUR TI - Does China's carbon emission trading policy improve regional energy efficiency?—an analysis based on quasi-experimental and policy spillover effects AU - Zhang, Xue-mei AU - Lu, Fei-fei AU - Xue, Dan PY - 2021 PB - Springer Science and Business Media LLC LA - eng UR - https://doi.org/10.1007/s11356-021-17021-4 DO - 10.1007/s11356-021-17021-4 T2 - Environmental science and pollution research: ESPR VL - 29 IS - 14 SN - 1614-7499 SN - 0944-1344 SP - 21166-21183 UR - https://www.pollux-fid.de/r/cr-10.1007/s11356-021-17021-4 H1 - Pollux (Fachinformationsdienst Politikwissenschaft) ER -