Foellmi, C.; Moffat, A.F.J. (2002). «Are Peculiar Wolf-Rayet Stars of Type WN8 Thorne-Zytkow Objects?». En Shara, Michael M., ed. Stellar Collisions, Mergers and their Consequences. ASP Conference Proceedings 263. Bibcode:2002ASPC..263..123F. ISBN1-58381-103-6. arXiv:astro-ph/0607217.
Mereghetti, Sandro (1995). «A Spin-down Variation in the 6 Second X-Ray Pulsar 1E 1048.1-5937». Astrophysical Journal (Diciembre de 1995) 455: 598. Bibcode:1995ApJ...455..598M. doi:10.1086/176607.
Foellmi, C.; Moffat, A.F.J. (2002). «Are Peculiar Wolf-Rayet Stars of Type WN8 Thorne-Zytkow Objects?». En Shara, Michael M., ed. Stellar Collisions, Mergers and their Consequences. ASP Conference Proceedings 263. Bibcode:2002ASPC..263..123F. ISBN1-58381-103-6. arXiv:astro-ph/0607217.
Mereghetti, Sandro (1995). «A Spin-down Variation in the 6 Second X-Ray Pulsar 1E 1048.1-5937». Astrophysical Journal (Diciembre de 1995) 455: 598. Bibcode:1995ApJ...455..598M. doi:10.1086/176607.