@misc{indiciaeaf25969b71c8,
  title = {Ca isotope fractionation on the moon},
  author = {Russell, W. A. and Papanastassiou, D. A. and Tombrello, T. A. and Epstein, S.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780057859},
  note = {Source identifier: 19780057859}
}