1. Cosmic Noise;Sullivan,2009
2. The Owens Valley Radio Observatory: Early Years;Cohen;Eng. Sci.,1994
3. Cosmic Radio Waves;Shklovski,1960
4. Descriptions of 762 Nebulae and Clusters, Photographed with the Crossley Reflector;Curtis;Publ. Lick Obs.,1918
5. Positions of Three Discrete Sources of Galactic Radio-Frequency Radiation