NGC 6217 (Greek Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 6217" in Greek language version.

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Skrutskie, M. F.; Cutri, R. M.; Stiening, R.; Weinberg, M. D.; Schneider, S.; Carpenter, J. M.; Beichman, C.; Capps, R. και άλλοι. (February 2006), «The Two Micron All Sky Survey (2MASS)», Astrophysical Journal 131 (2): 1163–1183, doi:10.1086/498708
Gusev, A. S.; Pilyugin, L. S.; Sakhibov, F.; Dodonov, S. N.; Ezhkova, O. V.; Khramtsova, M. S.; Garzón, F. (August 2012), «Oxygen and nitrogen abundances of Η II regions in six spiral galaxies», Monthly Notices of the Royal Astronomical Society 424 (3): 1930–1940, doi:10.1111/j.1365-2966.2012.21322.x
Ann, Hong Bae (December 2003), «CCD Surface Photometry of Spiral Galaxies: Bulge Morphology», Journal of the Korean Astronomical Society 36 (4): 261–270, doi:10.5303/jkas.2003.36.4.261
Cid Fernandes, Roberto; González Delgado, Rosa M.; Schmitt, Henrique; Storchi-Bergmann, Thaisa; Martins, Lucimara P.; Pérez, Enrique; Heckman, Timothy; Leitherer, Claus και άλλοι. (April 2004), «The Stellar Populations of Low-Luminosity Active Galactic Nuclei. I. Ground-based Observations», The Astronomical Journal 605 (1): 105–126, doi:10.1086/382217
Véron-Cetty, M.-P.; Véron, P. (July 2010), «A catalogue of quasars and active nuclei», Astronomy and Astrophysics 518: A10, doi:10.1051/0004-6361/201014188