@book{ BD01705470,
 author = "Alsina, Claudi and Nelsen, Roger B.",
 title = "A panoply of polygons",
 publisher = "MAA Press, an imprint of the American Mathematical Society",
 year = "2023",
 series = "The Dolciani mathematical expositions",
 number = "v. 58",
 URL = "https://ci.nii.ac.jp/ncid/BD01705470"
}
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