TY  - RPRT
TI  - Approximate angular distribution and spectra for geomagnetically trapped protons in low-earth orbit
AU  - Watts, J. W.
AU  - Parnell, T. A.
AU  - Heckman, H. H.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19900038253
ID  - 19900038253
ER  -