@misc{indiciaeb1494a5febba,
  title = {Mars and the early Sun},
  author = {Whitmire, D. P. and Doyle, L. R. and Reynolds, R. T. and Whitman, P. G.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940017210},
  note = {Source identifier: 19940017210}
}