@article{publication7271,
  title={Does the extended producer responsibility system promote the green technological innovation of enterprises? An empirical study based on the difference-in-differences model},
  author={Zhao, Yinyin and  Peng, Benhong and  Elahi, Ehsan and  Wan, Anxia and  },
  journal={Journal of Cleaner Production},
  volume={319},
  year={2021}
}