@misc{indiciaefccb50d57295,
  title = {What is Retrogradation? [Slides]},
  author = {Sickafus, Kurt Edward},
  year = {2022},
  doi = {10.2172/1900472},
  url = {https://www.osti.gov/biblio/1900472},
  note = {Source identifier: 1900472}
}