環状銀河 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "環状銀河" in Japanese language version.

refsWebsite

Global rank Japanese rank

low place

3,349^th place

75^th place

171^st place

887^th place

1,620^th place

caltech.edu

ned.ipac.caltech.edu

Struck-Marcell (1996年). “Collisional Ring Galaxies”. March 31, 2012閲覧。

gifu-u.ac.jp

chigaku.ed.gifu-u.ac.jp

[1]岐阜大学教育学部理科教育講座（地学）

nasa.gov

apod.nasa.gov

“Hoag's Object: A Strange Ring Galaxy”. Astronomy Picture of the Day. NASA and Michigan Technological University (September 9, 2002). March 31, 2012閲覧。