@misc{indiciae02f562eb7128,
  title = {Optimal solutions to a linear inverse problem in geophysics.},
  author = {T H Jordan and J N Franklin},
  year = {1971},
  doi = {10.1073/pnas.68.2.291},
  url = {https://pubmed.ncbi.nlm.nih.gov/16591902/},
  note = {Source identifier: 16591902}
}