TY  - RPRT
TI  - Compositional changes, time and density variations in the magnetosphere associated with Birkeland currents and particle acceleration
AU  - Ungstrup, E.
AU  - Heikkila, W. J.
AU  - Foster, J. C.
AU  - Lennartsson, W. O.
PY  - 1986
UR  - https://ntrs.nasa.gov/citations/19870047214
ID  - 19870047214
ER  -