Seligman, Courtney. «NGC 3949». Celestial Atlas. Ανακτήθηκε στις 9 Αυγούστου 2024.
doi.org
dx.doi.org
G. Giuricin; C. Marinoni; L. Ceriani; A. Pisani (2000). «Nearby Optical Galaxies: Selection of the Sample and Identification of Groups». Astrophysical Journal543 (1): 178–194. doi:10.1086/317070. Bibcode: 2000ApJ...543..178G.
harvard.edu
adsabs.harvard.edu
A. Garcia (1993). «General study of group membership. II - Determination of nearby groups». Astronomy and Astrophysics Supplement100: 47–90. Bibcode: 1993A&AS..100...47G.
G. Giuricin; C. Marinoni; L. Ceriani; A. Pisani (2000). «Nearby Optical Galaxies: Selection of the Sample and Identification of Groups». Astrophysical Journal543 (1): 178–194. doi:10.1086/317070. Bibcode: 2000ApJ...543..178G.