@misc{indiciae7b1a60083d92,
  title = {A precise UPb zircon age for the Archaean Pongola Supergroup volcanics in Swaziland},
  author = {E. Hegner and A. Kroner and P. Hunt},
  year = {1994},
  doi = {10.1016/0899-5362(94)90072-8},
  url = {https://pubs.usgs.gov/publication/70017112},
  note = {Source identifier: 70017112}
}