TY  - RPRT
TI  - Searching for extraterrestrial intelligence - The ultimate exploration
AU  - Black, D.
AU  - Tarter, J.
AU  - Cuzzi, J. N.
AU  - Conners, M.
AU  - Clark, T. A.
PY  - 1977
UR  - https://ntrs.nasa.gov/citations/19770063895
ID  - 19770063895
ER  -