@misc{indiciae444a488db33e,
  title = {Digital recordings of aftershocks of the 17 October 1989 Loma Prieta, California, earthquake},
  author = {Charles C. Mueller and Gary Glassmoyer},
  year = {1990},
  doi = {10.3133/ofr90503},
  url = {https://pubs.usgs.gov/publication/ofr90503},
  note = {Source identifier: ofr90503}
}