@misc{indiciaed9eb6032a7fe,
  title = {40Ar/39Ar age spectra of some undisturbed terrestrial samples},
  author = {G. Brent Dalrymple and M. A. Lanphere},
  year = {1974},
  doi = {10.1016/0016-7037(74)90146-x},
  url = {https://pubs.usgs.gov/publication/70010200},
  note = {Source identifier: 70010200}
}