@misc{indiciae62c757b615a8,
  title = {Potassium-calcium decay system},
  author = {Brian D. Marshall},
  year = {1999},
  doi = {10.1007/1-4020-4496-8\_260},
  url = {https://pubs.usgs.gov/publication/70207829},
  note = {Source identifier: 70207829}
}