Analysis of information sources in references of the Wikipedia article "M66" in Chinese language version.
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值 (帮助). The Astrophysical Journal. 2004, 614: 142–157 [2007-08-17]. (原始内容存档于2001-10-19).|url=
值 (帮助). The Astrophysical Journal. 2004, 614: 142–157 [2007-08-17]. (原始内容存档于2001-10-19).