@misc{indiciae4e5fda224ffd,
  title = {Solar activity during Skylab: Its distribution and relation to coronal holes},
  author = {Speich, D. M. and Smith, J. B., Jr. and Wilson, R. M. and Mcintosh, P. S.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780015051},
  note = {Source identifier: 19780015051}
}