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M. G.F. Kirsch, U. G. Briel, D. Burrows, S. Campana, G. Cusumano, K. Ebisawa, M. J. Freyberg, M. Guainazzi, F. Haberl, K. Jahoda, J. Kaastra, P. Kretschmar, S. Larsson, P. Lubinski, K. Mori, P. Plucinsky, A. M.T. Pollock, R. Rothschild, S. Sembay, J. Wilms, M. Yamamoto. Crab: the standard x-ray candle with all (modern) x-ray satellites. „UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV”. 5898, 2005. DOI: 10.1117/12.616893. arXiv:astro-ph/0508235. (ang.).
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W. Becker, B. Aschenbach, M. A. Alpar, Ü. Kızıloğlu, J. van Paradijs. ROSAT HRI Observations of the Crab Pulsar An Improved Temperature Upper Limit for PSR 0531+21, [w:] The Lives of the Neutron Stars, „Kluwer Academic”, 450, Proceedings of the NATO Advanced Study Institute on the Lives of the Neutron Stars, 1995, s. 47, ISBN 978-0-7923-324-6-6, Bibcode: 1995ASIC..450...47B, arXiv:astro-ph/9503012(ang.).???
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