en Megiddo, N. (). „Linear-time algorithms for linear programming in R3 and related problems”. SIAM Journal on Computing. 12 (4): 759–776. doi:10.1137/0212052.
handle.net
hdl.handle.net
en Johnson, Roger A. (). Modern Geometry: An Elementary Treatise on the Geometry of the Triangle and the Circle. Houghton Mifflin Co. p. 72. hdl:2027/wu.89043163211. Republished by Dover Publications as Advanced Euclidean Geometry, 1960 and 2007.
jstor.org
en De Villiers, Michael (martie 2011). „95.14 Equiangular cyclic and equilateral circumscribed polygons”. The Mathematical Gazette. 95 (532): 102–107. JSTOR23248632.