Kerber, F.; Mignani, R. P.; Guglielmetti, F.; Wicenec (September 2003), ”Galactic Planetary Nebulae and their central stars. I. An accurate and homogeneous set of coordinates”, Astronomy and Astrophysics 408 (3): 1029–1035, doi:10.1051/0004-6361:20031046, Bibcode: 2003A&A...408.1029K.
Stanghellini, Letizia; Shaw, Richard A.; Villaver, Eva (December 2008), ”The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale”, The Astrophysical Journal 689 (1): 194–202, doi:10.1086/592395, Bibcode: 2008ApJ...689..194S.
Frew, David; Parker, Quentin A.; Bojcic, Ivan (2016), ”The Hα surface brightness-radius relation: a robust statistical distance indicator for planetary nebulae”, Monthly Notices of the Royal Astronomical Society 455 (2): 1459–1488, doi:10.1093/mnras/stv1516, Bibcode: 2016MNRAS.455.1459F.
Cuesta, L.; Phillips, J. P. (November 2000), ”Excitation and Density Mapping of NGC 3587”, The Astrophysical Journal 120 (5): 2661–2669, doi:10.1086/316800, Bibcode: 2000AJ....120.2661C.
Guerrero, Martín A.; Chu, You-Hua; Manchado, Arturo; Kwitter, Karen B. (June 2003), ”Physical Structure of Planetary Nebulae. I. The Owl Nebula”, The Astrophysical Journal 125 (6): 3213–3221, doi:10.1086/375206, Bibcode: 2003AJ....125.3213G.
Capriotti, Eugene R.; Kovach, William S. (March 1968), ”Effective Temperatures of the Central Stars of Planetary Nebulae”, Astrophysical Journal 151 (5): 991–995, doi:10.1086/149498, Bibcode: 1968ApJ...151..991C.
Bilíková, Jana; Chu, You-Hua; Gruendl, Robert A.; Su, Kate Y. L.; De Marco, Orsola (May 2012), ”Spitzer Search for Dust Disks around Central Stars of Planetary Nebulae”, The Astrophysical Journal Supplement 200 (1): 3, doi:10.1088/0067-0049/200/1/3, Bibcode: 2012ApJS..200....3B.
Guerrero, Martn A.; Chu, You-Hua; Manchado, Arturo; Kwitter, Karen B. (June 2003). ”Physical Structure of Planetary Nebulae. I. The Owl Nebula” (på engelska). The Astronomical Journal 125 (6): sid. 3213–3221. doi:10.1086/375206. ISSN0004-6256. Bibcode: 2003AJ....125.3213G.
Sabbadin, F.; Bianchini, A.; Ortolani, S.; Strafella, F. (1985-12-01). ”The structure of NGC 3587, the Owl nebula” (på engelska). Monthly Notices of the Royal Astronomical Society 217 (3): sid. 539–549. doi:10.1093/mnras/217.3.539. ISSN0035-8711. Bibcode: 1985MNRAS.217..539S.
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Kerber, F.; Mignani, R. P.; Guglielmetti, F.; Wicenec (September 2003), ”Galactic Planetary Nebulae and their central stars. I. An accurate and homogeneous set of coordinates”, Astronomy and Astrophysics 408 (3): 1029–1035, doi:10.1051/0004-6361:20031046, Bibcode: 2003A&A...408.1029K.
Stanghellini, Letizia; Shaw, Richard A.; Villaver, Eva (December 2008), ”The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale”, The Astrophysical Journal 689 (1): 194–202, doi:10.1086/592395, Bibcode: 2008ApJ...689..194S.
Frew, David; Parker, Quentin A.; Bojcic, Ivan (2016), ”The Hα surface brightness-radius relation: a robust statistical distance indicator for planetary nebulae”, Monthly Notices of the Royal Astronomical Society 455 (2): 1459–1488, doi:10.1093/mnras/stv1516, Bibcode: 2016MNRAS.455.1459F.
Cuesta, L.; Phillips, J. P. (November 2000), ”Excitation and Density Mapping of NGC 3587”, The Astrophysical Journal 120 (5): 2661–2669, doi:10.1086/316800, Bibcode: 2000AJ....120.2661C.
Guerrero, Martín A.; Chu, You-Hua; Manchado, Arturo; Kwitter, Karen B. (June 2003), ”Physical Structure of Planetary Nebulae. I. The Owl Nebula”, The Astrophysical Journal 125 (6): 3213–3221, doi:10.1086/375206, Bibcode: 2003AJ....125.3213G.
Capriotti, Eugene R.; Kovach, William S. (March 1968), ”Effective Temperatures of the Central Stars of Planetary Nebulae”, Astrophysical Journal 151 (5): 991–995, doi:10.1086/149498, Bibcode: 1968ApJ...151..991C.
Bilíková, Jana; Chu, You-Hua; Gruendl, Robert A.; Su, Kate Y. L.; De Marco, Orsola (May 2012), ”Spitzer Search for Dust Disks around Central Stars of Planetary Nebulae”, The Astrophysical Journal Supplement 200 (1): 3, doi:10.1088/0067-0049/200/1/3, Bibcode: 2012ApJS..200....3B.
Manchado, A.; Guerrero, M.; Kwitter, K. B.; Chu, Y.-H. (December 1992). ”A Halo of Red Giant Wind around the Owl Nebula” (på engelska). AAS 181: sid. 67.04. Bibcode: 1992AAS...181.6704M.
Sabbadin, F.; Bianchini, A.; Ortolani, S.; Strafella, F. (1985-12-01). ”The structure of NGC 3587, the Owl nebula” (på engelska). Monthly Notices of the Royal Astronomical Society 217 (3): sid. 539–549. doi:10.1093/mnras/217.3.539. ISSN0035-8711. Bibcode: 1985MNRAS.217..539S.
Guerrero, Martn A.; Chu, You-Hua; Manchado, Arturo; Kwitter, Karen B. (June 2003). ”Physical Structure of Planetary Nebulae. I. The Owl Nebula” (på engelska). The Astronomical Journal 125 (6): sid. 3213–3221. doi:10.1086/375206. ISSN0004-6256. Bibcode: 2003AJ....125.3213G.
O'Meara, Stephen James, 1956- (2007). Steve O'Meara's Herschel 400 observing guide : how to find and explore 400 star clusters, nebulae, and galaxies discovered by William and Caroline Herschel. Cambridge: Cambridge University Press. ISBN 978-0-521-85893-9. OCLC85829276
Nasim, Omar W., 1976- (6 January 2014). Observing by hand : sketching the nebulae in the nineteenth century. Chicago. ISBN 978-0-226-08440-4. OCLC868276095
García-Díaz, Ma. T. Steffen, W. Henney, W. J. López, J. A. García-López, F. González-Buitrago, D. Aviles, A. (2018-06-12). The Owl and other strigiform nebulae: multipolar cavities within a filled shell. OCLC1098137978
Sabbadin, F.; Bianchini, A.; Ortolani, S.; Strafella, F. (1985-12-01). ”The structure of NGC 3587, the Owl nebula” (på engelska). Monthly Notices of the Royal Astronomical Society 217 (3): sid. 539–549. doi:10.1093/mnras/217.3.539. ISSN0035-8711. Bibcode: 1985MNRAS.217..539S.