希皮奥内·德尔·费罗 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "希皮奥内·德尔·费罗" in Chinese language version.

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1web.archive.org

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web.archive.org

Weisstein, Eric W. (编). Cubic Formula. at MathWorld--A Wolfram Web Resource. Wolfram Research, Inc. [2007-06-28]. （原始内容存档于2011-05-22）（英语）.

wolfram.com

mathworld.wolfram.com

Weisstein, Eric W. (编). Cubic Formula. at MathWorld--A Wolfram Web Resource. Wolfram Research, Inc. [2007-06-28]. （原始内容存档于2011-05-22）（英语）.