@misc{indiciae8192c55c7183,
  title = {Delineation of blue-ice areas in Antarctica from satellite imagery},
  author = {Richard S. Williams and Tony K. Meunier and Jane G. Ferrigno},
  year = {1983},
  url = {https://pubs.usgs.gov/publication/70236826},
  note = {Source identifier: 70236826}
}