@article{8561,
  author = {C. Schrijver},
  title = {Solar active regions: radiative intensities and large-scale parameters of the magnetic field},
  year = {1986},
  journal = {Astronomy and Astrophysics},
  volume = {180},
  pages = {241-252},
  url = {http://adsabs.harvard.edu/full/1987A\%26A...180..241S},
  note = {JILA Pub. 3739},
}