@misc{indiciae58f523eed411,
  title = {Compositional changes, time and density variations in the magnetosphere associated with Birkeland currents and particle acceleration},
  author = {Ungstrup, E. and Heikkila, W. J. and Foster, J. C. and Lennartsson, W. O.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870047214},
  note = {Source identifier: 19870047214}
}