@misc{indiciae2feb1aff2050,
  title = {Oregon trails revisted},
  author = {Lewis, A. J. and Alexander, C. J. and Hall, M. J. and Isaacson, D. L. and Murray, R. J. and Schrumpf, B. J.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19830009715},
  note = {Source identifier: 19830009715}
}