R星协 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "R星协" in Chinese language version.

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1^st place

harvard.edu

W. Herbst. R associations. I - UBV photometry and MK spectroscopy of stars in southern reflection nebulae. Astronomical Journal. 1976, 80: 212–226.
W. Herbst, R. Racine. R associations. V. MON R2.. Astronomical Journal. 1976, 81: 840.
W. Herbst. R-associations III. Local optical spiral structure. Astronomical Journal. 1975, 80: 503 [2008-02-16]. （原始内容存档于2017-11-09）.

W. Herbst. R-associations III. Local optical spiral structure. Astronomical Journal. 1975, 80: 503 [2008-02-16]. （原始内容存档于2017-11-09）.