(Klaas et al. 2006, p. 523) Klaas, U.; Walker, S. J.; Müller, T. G.; Richards, P. J.; Schreiber, J. (), „Multi-aperture photometry of extended IR sources with ISOPHOT. I. The nature of extended IR emission of planetary Nebulae”, Astronomy and Astrophysics, 452 (2): 523–535, Bibcode:2006A&A...452..523K, doi:10.1051/0004-6361:20053245
(Hora et al. 2004, p. 299) Hora, Joseph L.; Latter, William B.; Allen, Lori E.; Marengo, Massimo; Deutsch, Lynne K.; Pipher, Judith L. (), „Infrared Array Camera (IRAC) Observations of Planetary Nebulae”, Astrophysical Journal Supplement Series, 154 (1): 296–301, Bibcode:2004ApJS..154..296H, doi:10.1086/422820
(Reed et al. 1999) Reed, Darren S.; Balick, Bruce; Hajian, Arsen R.; Klayton, Tracy L.; Giovanardi, Stefano; Casertano, Stefano; Panagia, Nino; Terzian, Yervant (), „Hubble Space Telescope Measurements of the Expansion of NGC 6543: Parallax Distance and Nebular Evolution”, Astronomical Journal, 118 (5): 2430–2441, arXiv:astro-ph/9907313, Bibcode:1999AJ....118.2430R, doi:10.1086/301091
(Moore 2007) Moore, S. L. (), „Observing the Cat's Eye Nebula”, Journal of the British Astronomical Association, 117 (5): 279–280, Bibcode:2007JBAA..117R.279M
(Bianchi, Cerrato & Grewing 1986) Bianchi, L.; Cerrato, S.; Grewing, M. (noiembrie 1986), „Mass loss from central stars of planetary nebulae—the nucleus of NGC 6543”, Astronomy and Astrophysics, 169 (1–2): 227–236, Bibcode:1986A&A...169..227B
(Klaas et al. 2006, p. 523) Klaas, U.; Walker, S. J.; Müller, T. G.; Richards, P. J.; Schreiber, J. (), „Multi-aperture photometry of extended IR sources with ISOPHOT. I. The nature of extended IR emission of planetary Nebulae”, Astronomy and Astrophysics, 452 (2): 523–535, Bibcode:2006A&A...452..523K, doi:10.1051/0004-6361:20053245
(Hora et al. 2004, p. 299) Hora, Joseph L.; Latter, William B.; Allen, Lori E.; Marengo, Massimo; Deutsch, Lynne K.; Pipher, Judith L. (), „Infrared Array Camera (IRAC) Observations of Planetary Nebulae”, Astrophysical Journal Supplement Series, 154 (1): 296–301, Bibcode:2004ApJS..154..296H, doi:10.1086/422820
(Reed et al. 1999, pp. 2438–2440) Reed, Darren S.; Balick, Bruce; Hajian, Arsen R.; Klayton, Tracy L.; Giovanardi, Stefano; Casertano, Stefano; Panagia, Nino; Terzian, Yervant (), „Hubble Space Telescope Measurements of the Expansion of NGC 6543: Parallax Distance and Nebular Evolution”, Astronomical Journal, 118 (5): 2430–2441, arXiv:astro-ph/9907313, Bibcode:1999AJ....118.2430R, doi:10.1086/301091
(Miranda & Solf 1992) Miranda, L. F.; Solf, J. (), „Long-slit spectroscopy of the planetary nebula NGC 6543—Collimated bipolar ejections from a precessing central source?”, Astronomy and Astrophysics, 260 (1–2): 397–410, Bibcode:1992A&A...260..397M