@misc{indiciae8792d331f141,
  title = {Geochemistry, strontium isotope data, and potassium-argon ages of the andesite-rhyolite association in the Padang area, West Sumatra},
  author = {G. W. Leo and C. E. Hedge and R. F. Marvin},
  year = {1980},
  url = {https://pubs.usgs.gov/publication/70012313},
  note = {Source identifier: 70012313}
}