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Sekanina, Z. (1997). "Detection of a Satellite orbiting the Nucleus of Comet Hale–Bopp (C/1995 O1)". Earth, Moon, and Planets. 77 (3). European Organisation for Astronomical Research in the Southern Hemisphere: 155–163. Bibcode:1997EM&P...77..155S. doi:10.1023/A:1006230712665. S2CID122481110.
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Cremonese, G; Boehnhardt, H; Crovisier, J; Rauer, H; Fitzsimmons, A; Fulle, M; Licandro, J; Pollacco, D; et al. (1997). "Neutral Sodium from Comet Hale–Bopp: A Third Type of Tail". The Astrophysical Journal Letters. 490 (2): L199 –L202. arXiv:astro-ph/9710022. Bibcode:1997ApJ...490L.199C. doi:10.1086/311040. S2CID119405749.
Stern, S. A.; Slater, D. C.; Festou, M. C.; Parker, J. Wm.; Gladstone, G. R.; A'hearn, M. F.; Wilkinson, E. (2000). "The Discovery of Argon in Comet C/1995 O1 (Hale–Bopp)". The Astrophysical Journal. 544 (2): L169 –L172. arXiv:astro-ph/0011327. Bibcode:2000ApJ...544L.169S. doi:10.1086/317312. S2CID16759616.
Sekanina, Z. (1997). "Detection of a Satellite orbiting the Nucleus of Comet Hale–Bopp (C/1995 O1)". Earth, Moon, and Planets. 77 (3). European Organisation for Astronomical Research in the Southern Hemisphere: 155–163. Bibcode:1997EM&P...77..155S. doi:10.1023/A:1006230712665. S2CID122481110.
Hale, Alan (1997). "Hale–Bopp Comet Madness". Skeptical Inquirer. 21 (2): 25–28. Archived from the original on February 8, 2010. Retrieved December 6, 2009.
Tholen, David J. (January 15, 1997). "Fraudulent use of an IfA/UH picture". European Organisation for Astronomical Research in the Southern Hemisphere. Archived from the original on September 30, 2007. Retrieved October 14, 2008.