(en) W. Becker & B. Aschenbach, X-ray Observations of Neutron Stars and Pulsars: First Results from XMM-Newton, In Proceedings of the 270.WE-Heraeus Seminar on Neutron Stars, Pulsars and Supernova Remnants, W. Becker, H. Lesch & J. Truemper (éd), MPE-Report 278 (2002), astro-ph/0208466 Voir en ligne.
(en) A. De Lucaet al., A Long-Period, Violently Variable X-ray Source in a Young Supernova Remnant, Science, 313, 814-817 (2006), astro-ph/0607173 Voir en ligne.