Lallement, Rosine; Bertaux, Jean-Loup; Szegö, Karöly; Nemeth, Szilvia. The Shadow of Comet Hale–Bopp in Lyman-Alpha. Earth, Moon, and Planets. 2002, 90: 67–76. doi:10.1023/A:1021512317744.
Lisse, C. M.; Dennerl, K.; Englhauser, J.; Harden, M.; Marshall, F. E.; Mumma, M. J.; Petre, R.; Pye, J. P.; Ricketts, M. J.; Schmitt, J.; Trumper, J.; West, R. G. Discovery of X-ray and Extreme Ultraviolet Emission from Comet C/Hyakutake 1996 B2. Science. 1996, 274 (5285): 205. Bibcode:1996Sci...274..205L. doi:10.1126/science.274.5285.205.
Lisse, C. M.; Dennerl, K.; Englhauser, J.; Harden, M.; Marshall, F. E.; Mumma, M. J.; Petre, R.; Pye, J. P.; Ricketts, M. J.; Schmitt, J.; Trumper, J.; West, R. G. Discovery of X-ray and Extreme Ultraviolet Emission from Comet C/Hyakutake 1996 B2. Science. 1996, 274 (5285): 205. Bibcode:1996Sci...274..205L. doi:10.1126/science.274.5285.205.
Oort, J. H. The structure of the cloud of comets surrounding the Solar System and a hypothesis concerning its origin. Bulletin of the Astronomical Institutes of the Netherlands. 1950, 11: 91. Bibcode:1950BAN....11...91O.
Chebotarev, G. A. Gravitational Spheres of the Major Planets, Moon and Sun. Soviet Astronomy. 1964, 7: 618. Bibcode:1964SvA.....7..618C.