@article{doesenergyefficiencyaffectambientpm25,
  title = {Does energy efficiency affect ambient PM2.5? The moderating role of energy investment},
  author = {Cunyi Yang and Tinghui Li and Khaldoon Albitar},
  year = {2021},
  eprint = {2105.11080},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.11080v1},
}