Κατάλογος αντικειμένων NGC (6000-6999) (Greek Wikipedia)

Analysis of information sources in references of the Wikipedia article "Κατάλογος αντικειμένων NGC (6000-6999)" in Greek language version.

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archive.org

Sinnott, R. W. (1988). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer (στα Αγγλικά). Sky Publishing Corporation and Cambridge University Press. ISBN 0-933-34651-4.

caltech.edu

nedipac.caltech.edu

«NASA/IPAC Extragalactic Database». Results for various objects.

doi.org

dx.doi.org

M. Odenkirchen & C. Soubiran (2002). «NGC 6994: - clearly not a physical stellar ensemble». Astronomy & Astrophysics 383: 163–170. doi:10.1051/0004-6361:20011730. http://adsabs.harvard.edu/abs/2002A&A...383..163O.

harvard.edu

adsabs.harvard.edu

M. Odenkirchen & C. Soubiran (2002). «NGC 6994: - clearly not a physical stellar ensemble». Astronomy & Astrophysics 383: 163–170. doi:10.1051/0004-6361:20011730. http://adsabs.harvard.edu/abs/2002A&A...383..163O.