@misc{indiciaefd63b92502f5,
  title = {Active regions and the interplanetary magnetic field.},
  author = {Ness, N. F. and Schatten, K. H. and Wilcox, J. M.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680054494},
  note = {Source identifier: 19680054494}
}