छल्ला नीहारिका (Hindi Wikipedia)

Analysis of information sources in references of the Wikipedia article "छल्ला नीहारिका" in Hindi language version.

refsWebsite

Global rank Hindi rank

2^nd place

5^th place

18^th place

56^th place

doi.org

O'Dell, C. R.; Sabbadin, F.; Henney, W. J. (2007). "The Three-Dimensional Ionization Structure and Evolution of NGC 6720, The Ring Nebula". Astronomical Journal. 134 (4): 1679–1692. डीओआइ:10.1086/521823. बिबकोड:2007AJ....134.1679O.सीएस1 रखरखाव: एक से अधिक नाम: authors list (link)

harvard.edu

ui.adsabs.harvard.edu

O'Dell, C. R.; Sabbadin, F.; Henney, W. J. (2007). "The Three-Dimensional Ionization Structure and Evolution of NGC 6720, The Ring Nebula". Astronomical Journal. 134 (4): 1679–1692. डीओआइ:10.1086/521823. बिबकोड:2007AJ....134.1679O.सीएस1 रखरखाव: एक से अधिक नाम: authors list (link)