@misc{indiciaeb90e1498a5eb,
  title = {Planetary tides during the Maunder Sunspot Minimum},
  author = {Smythe, C. M. and Eddy, J. A.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770045872},
  note = {Source identifier: 19770045872}
}