@misc{indiciae3def0d65d3b2,
  title = {A constant daylength during the Precambrian era?},
  author = {Zahnle, K. and Walker, J. C.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/20040089099},
  note = {Source identifier: 20040089099}
}