J.S. Mackay (1893):The Geometrography of Euclid’s Problems. In: Proceedings of the Edinburgh Mathematical Society; vol. 12, pp. 2-16. Via: Cambridge University Press (PDF-bestand). Gearchiveerd op 18 juni 2018.
J.S. Mackay (1893):The Geometrography of Euclid’s Problems. In: Proceedings of the Edinburgh Mathematical Society; vol. 12, pp. 2-16. Via: Cambridge University Press (PDF-bestand). Gearchiveerd op 18 juni 2018.