@misc{indiciae05a809dbb228,
  title = {Open magnetic structures on the sun},
  author = {Levine, R. H. and Altschuler, M. D. and Harvey, J. W. and Jackson, B. V.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770056576},
  note = {Source identifier: 19770056576}
}