@article{sitti2021china,
  title = {China’s ambitions and challenges for asteroid–comet exploration},
  journal = {Nature Astronomy},
  volume = {5},
  number = {8},
  pages = {730--731},
  year = {2021},
  author = {Zhang, Tao and Xu, Kun and Ding, Xilun},
  doi = {10.1038/s41550-021-01418-9}
}