@misc{indiciae16eda1e26ef8,
  title = {Laser-excited fluorescence of rare earth elements in fluorite: Initial observations with a laser Raman microprobe},
  author = {R.C. Burruss and T.G. Ging and R. G. Eppinger and a.M. Samson},
  year = {1992},
  doi = {10.1016/0016-7037(92)90355-m},
  url = {https://pubs.usgs.gov/publication/70017278},
  note = {Source identifier: 70017278}
}