In den Mathematische Unterhaltungen (Zweites Heft, S. 128) wird auf die S. 36 von Reuschs Abhandlung Der Spitzbogen verwiesen.
jstor.org
Nathan Altshiller-Court: The Tetrahedron and Its Circumscribed Parallelepiped. The Mathematics Teacher, Vol. 26, No. 1 (JANUARY 1933), ss. 46–52 (JSTOR 10 Kasım 2020 tarihinde Wayback Machine sitesinde arşivlendi.)
Norman Schaumberger: Commandino's theorem. The Two-Year College Mathematics Journal, Vol. 13, No. 5 (Nov., 1982), s. 331 (JSTOR 17 Kasım 2020 tarihinde Wayback Machine sitesinde arşivlendi.)
Nathan Altshiller Court: Notes on the centroid. The Mathematics Teacher, Vol. 53, No. 1 (January 1960), ss. 34 (JSTOR 11 Kasım 2020 tarihinde Wayback Machine sitesinde arşivlendi.)
web.archive.org
Nathan Altshiller-Court: The Tetrahedron and Its Circumscribed Parallelepiped. The Mathematics Teacher, Vol. 26, No. 1 (JANUARY 1933), ss. 46–52 (JSTOR 10 Kasım 2020 tarihinde Wayback Machine sitesinde arşivlendi.)
Norman Schaumberger: Commandino's theorem. The Two-Year College Mathematics Journal, Vol. 13, No. 5 (Nov., 1982), s. 331 (JSTOR 17 Kasım 2020 tarihinde Wayback Machine sitesinde arşivlendi.)
Nathan Altshiller Court: Notes on the centroid. The Mathematics Teacher, Vol. 53, No. 1 (January 1960), ss. 34 (JSTOR 11 Kasım 2020 tarihinde Wayback Machine sitesinde arşivlendi.)