1. |
Charles H.
Townes: 1961, Nature. |
2. |
Bernard M. Oliver:
1971, Project Cyclops. |
3. |
V. F. Shvartsman: 1977,
Communications of the Special Astrophysical Observatory (Russian). Actual Optical SETI
observations at 550 nm. Spectral resolution < 10-6 nm. |
4. |
P. Connes: 1979, Conference on Life
in the Universe. |
5. |
Charles H. Townes: 1983, Proc. Natl.
Acad. Sci. |
6. |
Ben Zuckerman: 1985, Acta
Astronautica. |
7. |
Albert Betz: 1986, Acta
Astronautica. |
8. |
V.S. Streinitskij: 1991,
Springer-Verlag. |
9. |
John Rather: 1991, JBIS. |
10. |
Stuart A. Kingsley: 1991, ? |