@misc{indiciae7a4d6371f1f0,
  title = {The Sudbury impact layer in the paleoproterozoiciron ranges of northern Michigan, USA},
  author = {W.F. Cannon and K. J. Schulz and J. Wright Horton and David A. King},
  year = {2009},
  doi = {10.1130/b26517.1},
  url = {https://pubs.usgs.gov/publication/70037058},
  note = {Source identifier: 70037058}
}