@misc{indiciae9cb00b2feb3a,
  title = {Chromospheric variations in main-sequence stars},
  author = {Baliunas, S. L. and Donahue, R. A. and Soon, J. H. and Horne, J. H. and Frazer, J. and Woodard-Eklund, L. and Bradford, M. and Rao, L. M. and Wilson, O. C. and Zhang, Q.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19950048251},
  note = {Source identifier: 19950048251}
}