NGC 669 (Greek Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 669" in Greek language version.

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caltech.edu

«Your NED Search Results». ned.ipac.caltech.edu. Ανακτήθηκε στις 17 Νοεμβρίου 2018.
«Detailed Object Classifications». ned.ipac.caltech.edu. Ανακτήθηκε στις 17 Νοεμβρίου 2018.

«NASA/IPAC Extragalactic Database». Results for NGC 669. Ανακτήθηκε στις 16 Νοεμβρίου 2018.

«New General Catalog Objects: NGC 650 - 699». cseligman.com (στα Αγγλικά). Ανακτήθηκε στις 14 Νοεμβρίου 2018.

P., Fouque; E., Gourgoulhon; P., Chamaraux; G., Paturel (May 1992). «Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members» (στα αγγλικά). Astronomy and Astrophysics Supplement Series 93: 211. ISSN 0365-0138. Bibcode: 1992A&AS...93..211F.
M., Garcia, A. (July 1993). «General study of group membership. II - Determination of nearby groups» (στα αγγλικά). Astronomy and Astrophysics Supplement Series 100: 47. ISSN 0365-0138. Bibcode: 1993A&AS..100...47G.
Giuricin, Giuliano; Marinoni, Christian; Ceriani, Lorenzo; Pisani, Armando (November 2000). «Nearby Optical Galaxies: Selection of the Sample and Identification of Groups» (στα αγγλικά). The Astrophysical Journal 543 (1): 178–194. doi:10.1086/317070. ISSN 0004-637X. Bibcode: 2000ApJ...543..178G. http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:astro-ph/0001140.

P., Fouque; E., Gourgoulhon; P., Chamaraux; G., Paturel (May 1992). «Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members» (στα αγγλικά). Astronomy and Astrophysics Supplement Series 93: 211. ISSN 0365-0138. Bibcode: 1992A&AS...93..211F.
M., Garcia, A. (July 1993). «General study of group membership. II - Determination of nearby groups» (στα αγγλικά). Astronomy and Astrophysics Supplement Series 100: 47. ISSN 0365-0138. Bibcode: 1993A&AS..100...47G.
Giuricin, Giuliano; Marinoni, Christian; Ceriani, Lorenzo; Pisani, Armando (November 2000). «Nearby Optical Galaxies: Selection of the Sample and Identification of Groups» (στα αγγλικά). The Astrophysical Journal 543 (1): 178–194. doi:10.1086/317070. ISSN 0004-637X. Bibcode: 2000ApJ...543..178G. http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:astro-ph/0001140.