@misc{indiciae1c923758ab56,
  title = {Geochemical studies of rare earth elements in the Portuguese pyrite belt, and geologic and geochemical controls on gold distribution},
  author = {David J. Grimes and Robert L. Earhart and Delfim de Carvalho and Vitor Oliveira and Jose T. Oliveira and Paulo Castro},
  year = {1998},
  doi = {10.3133/pp1596},
  url = {https://pubs.usgs.gov/publication/pp1596},
  note = {Source identifier: pp1596}
}