@misc{indiciaeaf68d0a1357a,
  title = {A source for the geomagnetic storm main phase ring current},
  author = {Lyons, L. R. and Williams, D. J.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19800042652},
  note = {Source identifier: 19800042652}
}