@misc{indiciae6775bbbc60f0,
  title = {Potential future Mars missions},
  author = {Matousek, S. E. and Graf, J. E. and Bell, J. L. and Miller, S. L.},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20210001101},
  note = {Source identifier: 20210001101}
}