TY  - RPRT
TI  - An upper limit to coronal X-rays from single, magnetic white dwarfs
AU  - Cavallo, Rob
AU  - Arnaud, Keith A.
AU  - Trimble, Virginia
PY  - 1993
UR  - https://ntrs.nasa.gov/citations/19950043556
ID  - 19950043556
ER  -