@misc{indiciaea09b5048db57,
  title = {Digital-image processing and image analysis of glacier ice},
  author = {Joan J. Fitzpatrick},
  year = {2013},
  doi = {10.3133/tm7d1},
  url = {https://pubs.usgs.gov/publication/tm7D1},
  note = {Source identifier: tm7D1}
}