@misc{indiciae879821fb23e5,
  title = {Meteoritic evidence for the Maunder minimum in solar activity},
  author = {Forman, M. A. and Schaeffer, O. A. and Schaeffer, G. A.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780045565},
  note = {Source identifier: 19780045565}
}