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References
- ↑ Kraus, John D. (1977). "The Ohio Sky Survey and other radio surveys". Vistas in Astronomy. 20 (3): 445–474. Bibcode:1977VA.....20..445K. doi:10.1016/0083-6656(77)90027-7.
- ↑ Scheer, D. J.; Kraus, J. D. (1967). "A High-Sensitivity Survey of the North Galactic Polar Region at 1415 MHz". The Astronomical Journal. 72 (4): 536. Bibcode:1967AJ.....72..536S. doi:10.1086/110263.
- ↑ Dixon, R. S.; Kraus, J. D. (1968). "A High-Sensitivity 1415 MHz Survey at North Declinations between 19 and 37 degrees". The Astronomical Journal. 73: 381. Bibcode:1968AJ.....73..381D. doi:10.1086/110642.
- ↑ Kraus, J. D.; Dixon, R. S.; Ehman, J. R. (1973). "The Ohio Survey – Status and Results". Bulletin of the American Astronomical Society. 5: 319. Bibcode:1973BAAS....5..319K.
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