Tham khảo Đường_thẳng_Droz-Farny

  1. 1 2 A. Droz-Farny (1899), Question 14111 The Educational Times, volume 71, pages 89-90
  2. ↑ Jean-Louis Ayme (2004), A Purely Synthetic Proof of the Droz-Farny Line Theorem. Forum Geometricorum, volume 14, pages 219–224, ISSN 1534-1178
  3. ↑ Floor van Lamoen and Eric W. Weisstein (), Droz-Farny Theorem at Mathworld
  4. ↑ J. J. O'Connor and E. F. Robertson (2006), Arnold Droz-Farny. The MacTutor History of Mathematics archive. Online document, accessed on 2014-10-05.
  5. ↑ René Goormaghtigh (1930), Sur une généralisation du théoreme de Noyer, Droz-Farny et Neuberg. Mathesis, volume 44, page 25
  6. ↑ Son Tran Hoang (2014), A synthetic proof of Dao's generalization of Goormaghtigh's theorem Lưu trữ 2014-10-06 tại Wayback Machine. Global Journal of Advanced Research on Classical and Modern Geometries, volume 3, pages 125–129, ISSN 2284-5569
  7. ↑ “Nguyen Ngoc Giang, A proof of Dao theorem, Global Journal of Advanced Research on Classical and Modern Geometries, ISSN: 2284-5569, Vol.4, (2015), Issue 2, page 102-105”. Bản gốc lưu trữ ngày 6 tháng 10 năm 2014. Truy cập ngày 20 tháng 10 năm 2014.
  8. ↑ Geoff Smith (2015). 99.20 A projective Simson line. The Mathematical Gazette, 99, pp 339-341. doi:10.1017/mag.2015.47
  9. ↑ O.T.Dao 29-July-2013, Two Pascals merge into one, Cut-the-Knot