@misc{indiciae18dd9e2b4efb,
  title = {K Ar and Rb Sr measurements on P-207, the U.S.G.S. interlaboratory standard muscovite},
  author = {M. A. Lanphere and G. B. Dalrymple},
  year = {1967},
  doi = {10.1016/0016-7037(67)90081-6},
  url = {https://pubs.usgs.gov/publication/70010566},
  note = {Source identifier: 70010566}
}