1. Surveys of the Galactic Plane at 1.414, 2.695, and 5.000 GHz.;Altenhoff;Astron. Astrophys.,1970
2. The Depolarization of Electromagnetic Waves;Beckmann,1968
3. Interstellar Communication,1963
4. The Hydrogen Line in Absorption;Clark;Astrophys. J.,1962
5. Searching for Interstellar Communications;Cocconi,1959