Hjellming, R. M.; Waltman, E. B.; Ghigo, F. (December 1997). "Radio Light Curves of X-ray Sources Obtained with the Green Bank Interferometer". American Astronomical Society, 191st AAS Meeting, Id.110.17; Bulletin of the American Astronomical Society. 29: 110.17. Bibcode:1997AAS...19111017H.
nasa.gov
ntrs.nasa.gov
Klepczynski, W. J.; Kaplan, G. H.; McCarthy, D. D.; Josties, F. J.; Branham, R. L.; Johnston, K. J.; Spencer, J. S. (1980). "Progress Report on The USNO/NRL Green Bank Interferometer Program"(PDF). NASA Conference Publication 2115: Radio Interferometry Techniques for Geodesy: 63. Retrieved 2 November 2016.
