TY  - RPRT
TI  - Interplanetary radial cosmic-ray gradients and their implication for a possible large modulation effect at the heliospheric boundary
AU  - Webber, W. R.
AU  - Lockwood, J. A.
PY  - 1987
UR  - https://ntrs.nasa.gov/citations/19870057197
ID  - 19870057197
ER  -