@misc{indiciae079cf2680cd4,
  title = {Mars deep drill : a mission concept for the next decade},
  author = {Beaty, David W. and Miller, Sylvia L. and Essmiller, John C.},
  year = {2004},
  url = {https://ntrs.nasa.gov/citations/20210005697},
  note = {Source identifier: 20210005697}
}