@misc{indiciae772b7bb0ae45,
  title = {Improved calibration procedures and new standards for U - Pb and Th - Pb dating of Phanerozoic xenotime by ion microprobe},
  author = {I.R. Fletcher and N.J. McNaughton and J.A. Aleinikoff and B. Rasmussen and S.L. Kamo},
  year = {2004},
  doi = {10.1016/j.chemgeo.2004.06.015},
  url = {https://pubs.usgs.gov/publication/70026592},
  note = {Source identifier: 70026592}
}