@misc{indiciaec741ee7bde7c,
  title = {Consequences of flight height and line spacing on airborne (helicopter) gravity gradient resolution in the Great Sand Dunes National Park and Preserve, Colorado},
  author = {M. Andy Kass},
  year = {2013},
  doi = {10.1190/tle32080932.1},
  url = {https://pubs.usgs.gov/publication/70118526},
  note = {Source identifier: 70118526}
}