A. 好書推薦列表：http://steiner.math.nthu.edu.tw/

B. 從美國數學年會中找書

1. google → site:archive.org Squaring the Circle and Other Monographs

Full text of " http://www.archive.org/stream/squaringcirclehi00hobsuoft/squaringcirclehi00hobsuoft_djvu.txt "

最原始的版本 for Squaring the Circle and Other Monographs。

2. google → site:archive.org "Squaring the Circle and Other Monographs"

Full text of "http://www.archive.org/stream/squaringthecircl000963mbp/squaringthecircl000963mbp_djvu.txt "

 此為四本書的合集，不單只有Squaring the Circle and Other Monographs，還有其他書本在其中。　

3. google → site:www.ams.org/ Who Is Alexander Grothendieck

4. google → Kenneth O. May and information retrieval in mathematics

C.平面連桿   (立體連桿)

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