@misc{indiciae82cdf889a461,
  title = {The sun's magnetic sector structure},
  author = {Svalgaard, L. and Wilcox, J. M. and Scherrer, P. H. and Howard, R.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19760038409},
  note = {Source identifier: 19760038409}
}