@misc{indiciaeeefe34fcc6df,
  title = {Pleistocene glaciation of volcano Ajusco, central Mexico, and comparison with the standard Mexican glacial sequence},
  author = {Sidney White and S. Valastro},
  year = {2017},
  doi = {10.1016/0033-5894(84)90086-3},
  url = {https://pubs.usgs.gov/publication/70206361},
  note = {Source identifier: 70206361}
}