[7] 普遍単位系の変遷: suchowan's blog, https://suchowan.at.webry.info/201712/article_25.html
[10] Dozenal Wiki → GitHub: suchowan's blog, https://suchowan.seesaa.net/article/202411article_25.html
[13] a_converter/doc at master · suchowan/a_converter · GitHub, https://github.com/suchowan/a_converter/tree/master/doc
[14] Dozenal Wiki → GitHub(つづき): suchowan's blog, https://suchowan.seesaa.net/article/202412article_19.html
[15] Dozenal Wiki → GitHub(さらにつづき): suchowan's blog, https://suchowan.seesaa.net/article/202412article_23.html