1. G. Leclerc (Comte de) Buffon, Historie Naturelle des Minéraux, III. Paris, 1783–1788, p. 433; as quoted in A. L. Mackay, A Dictionary of Scientific Quotations. Adam Hilger, Bristol, 1991, p. 43.
2. K. Čapek, Anglické Listy, Československý Spisovatel, Praha, 1970. The English version cited in our text was kindly provided by Alan L. Mackay, London.
3. Ibid.
4. A. L. Mackay, “Duerer’s technique.” Nature 1983, 301, 652. A careful analysis of the drawing is available: E. Schröder, Dürer. Kunst und Geometrie, Akademie Verlag, Berlin, 1980.
5. S. Alvarez, “Polyhedra in (inorganic) chemistry.” Dalton Trans. 2005, 2209‐2233.