@misc{indiciae20f37f916a6a,
  title = {The age and constitution of Cerro Campanario, a mafic stratovolcano in the Andes of central Chile},
  author = {Wes Hildreth and B. Singer and E. Godoy and F. Munizaga},
  year = {1998},
  doi = {10.4067/s0716-02081998000100002},
  url = {https://pubs.usgs.gov/publication/70020834},
  note = {Source identifier: 70020834}
}