@misc{indiciae020c5daf555a,
  title = {Lunar nitrogen: Secular variation or mixing?},
  author = {Norris, S. J. and Wright, I. P. and Pillinger, C. T.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860018561},
  note = {Source identifier: 19860018561}
}