TY  - RPRT
TI  - Positron annihilation in the interstellar medium
AU  - Guessoum, Nidhal
AU  - Ramaty, Reuven
AU  - Lingenfelter, Richard E.
PY  - 1991
UR  - https://ntrs.nasa.gov/citations/19910065870
ID  - 19910065870
ER  -