NGC 6337 (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 6337" in Polish language version.

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cseligman.com

Courtney Seligman: NGC 6337. Celestial Atlas. [dostęp 2014-07-19]. (ang.).

doi.org

Ma. T. García-Díaz et al.. The outflows and 3D structure of NGC 6337, a planetary nebula with a close binary nucleus. „The Astrophysical Journal”. 699 (2), s. 1633-1638, 2009-07-10. DOI: 10.1088/0004-637X/699/2/1633. (ang.).

seds.org

spider.seds.org

NGC 6337 w serwisie SEDS.org (Revised NGC and IC Catalog) (ang.)