21公分線 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "21公分線" in Chinese language version.

refsWebsite

Global rank Chinese rank

5web.archive.org

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1^st place

234^th place

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1,911^th place

1,519^th place

1sciencedaily.com

993^rd place

1,142^nd place

low place

low place

doi.org

Ewan, H.I.; E.M. Purcell. Observation of a line in the galactic radio spectrum (PDF). Nature. September 1951, 168 (4270): 356 [2008-09-21]. doi:10.1038/168356a0. （原始内容存档 (PDF)于2011-05-25）.
Muller, C.A.; J.H. Oort. The Interstellar Hydrogen Line at 1,420 Mc./sec., and an Estimate of Galactic Rotation (PDF). Nature. September 1951, 168 (4270): 357–358 [2008-09-21]. doi:10.1038/168357a0. （原始内容存档 (PDF)于2011-05-25）.

gsu.edu

hyperphysics.phy-astr.gsu.edu

The Hydrogen 21-cm Line. Hyperphysics. 喬治亞州立大學. 2004-10-30 [2008-09-20]. （原始内容存档于2018-07-29）.

n-t.ru

Makovetsky P. Smotri v koren' （页面存档备份，存于互联网档案馆） (in Russian)

nature.com

Ewan, H.I.; E.M. Purcell. Observation of a line in the galactic radio spectrum (PDF). Nature. September 1951, 168 (4270): 356 [2008-09-21]. doi:10.1038/168356a0. （原始内容存档 (PDF)于2011-05-25）.
Muller, C.A.; J.H. Oort. The Interstellar Hydrogen Line at 1,420 Mc./sec., and an Estimate of Galactic Rotation (PDF). Nature. September 1951, 168 (4270): 357–358 [2008-09-21]. doi:10.1038/168357a0. （原始内容存档 (PDF)于2011-05-25）.

sciencedaily.com

存档副本. [2018-03-03]. （原始内容存档于2020-12-19）.

web.archive.org

The Hydrogen 21-cm Line. Hyperphysics. 喬治亞州立大學. 2004-10-30 [2008-09-20]. （原始内容存档于2018-07-29）.
Ewan, H.I.; E.M. Purcell. Observation of a line in the galactic radio spectrum (PDF). Nature. September 1951, 168 (4270): 356 [2008-09-21]. doi:10.1038/168356a0. （原始内容存档 (PDF)于2011-05-25）.
Muller, C.A.; J.H. Oort. The Interstellar Hydrogen Line at 1,420 Mc./sec., and an Estimate of Galactic Rotation (PDF). Nature. September 1951, 168 (4270): 357–358 [2008-09-21]. doi:10.1038/168357a0. （原始内容存档 (PDF)于2011-05-25）.
存档副本. [2018-03-03]. （原始内容存档于2020-12-19）.
Makovetsky P. Smotri v koren' （页面存档备份，存于互联网档案馆） (in Russian)