ان‌جی‌سی ۵۱۸۹ (Persian Wikipedia)

Analysis of information sources in references of the Wikipedia article "ان‌جی‌سی ۵۱۸۹" in Persian language version.

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archive.org

Phillips J. P.; Reay N. K. (1983). "Ansae and the precession of central stars in planetary nebulae - The cases of NGC 5189 and NGC 6826". Astronomy and Astrophysics. 117: 33–37. Bibcode:1983A&A...117...33P.

harvard.edu

ui.adsabs.harvard.edu

Phillips J. P.; Reay N. K. (1983). "Ansae and the precession of central stars in planetary nebulae - The cases of NGC 5189 and NGC 6826". Astronomy and Astrophysics. 117: 33–37. Bibcode:1983A&A...117...33P.