TY  - RPRT
TI  - Combined first and second order Fermi acceleration at comets
AU  - Gombosi, T. I.
AU  - Lorencz, K.
AU  - Jokipii, J. R.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19890057106
ID  - 19890057106
ER  -