鳶尾花星雲 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "鳶尾花星雲" in Chinese language version.

refsWebsite

Global rank Chinese rank

2web.archive.org

1^st place

1^st place

1astrocruise.com

low place

low place

75^th place

140^th place

astrocruise.com

Perkins, Philip. NGC 7023. astrocruise.com. 2005 [2008-08-06]. （原始内容存档于2008-05-18）.

nasa.gov

apod.nasa.gov

Nemiroff, Robert; Bonnell, Jerry. APOD: 2004 November 4 - NGC 7023: The Iris Nebula. APOD (NASA). 2004-11-04 [2008-08-06]. （原始内容存档于2016-04-11）.

web.archive.org

Perkins, Philip. NGC 7023. astrocruise.com. 2005 [2008-08-06]. （原始内容存档于2008-05-18）.
Nemiroff, Robert; Bonnell, Jerry. APOD: 2004 November 4 - NGC 7023: The Iris Nebula. APOD (NASA). 2004-11-04 [2008-08-06]. （原始内容存档于2016-04-11）.