TY  - RPRT
TI  - Halos around planetary nebulae
AU  - Jewitt, D. C.
AU  - Danielson, G. E.
AU  - Kupferman, P. N.
PY  - 1986
UR  - https://ntrs.nasa.gov/citations/19860046710
ID  - 19860046710
ER  -