TY  - RPRT
TI  - Acoustic absorption by sunspots
AU  - Braun, D. C.
AU  - Labonte, B. J.
AU  - Duvall, T. L., Jr.
PY  - 1987
UR  - https://ntrs.nasa.gov/citations/19870062610
ID  - 19870062610
ER  -