@misc{indiciae26afc8c9d324,
  title = {Discovery concepts for Mars},
  author = {Luhmann, J. G. and Russell, C. T. and Brace, L. H. and Nagy, A. F. and Jakosky, B. M. and Barth, C. A. and Waite, J. H.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920019792},
  note = {Source identifier: 19920019792}
}