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Fender, Rob arXiv:0810.0951.

WebStars Astrophysics in CyberspaceThis list of astronomical resources created by the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA’s Goddard Space Flight Center. It is intended as a resource for users who have a general interest in astronomical topics.

The SAONASA Astrophysics Data SystemThe Astrophysics Data System (ADS) is a NASA-funded project which maintains four bibliographic databases containing more than 4.0 million records: Astronomy and Astrophysics, Instrumentation, Physics and Geophysics, and preprints in Astronomy.