@misc{indiciaec339f0e94eb9,
  title = {40Ar/39Ar systematics and argon diffusion in amber: Implications for ancient earth atmospheres},
  author = {G. P. Landis and L.W. Snee},
  year = {1991},
  doi = {10.1016/0921-8181(91)90127-i},
  url = {https://pubs.usgs.gov/publication/70016480},
  note = {Source identifier: 70016480}
}