@misc{indiciae72763bb933ee,
  title = {Evolution of mare basalts - The complexity of the U-Th-Pb system},
  author = {Unruh, D. M. and Tatsumoto, M.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780057747},
  note = {Source identifier: 19780057747}
}