[A01622554]Geometry Problems from Mathematical Olympiads Todev, R.
Geometry problems and solutions from Mathematical Olympiads,110 Geometry Problems - From The International Math Olympiad,Euclidean Geometry in Mathematical Olympiads (Problem Books) (Problem Books, 27): Evan Chen: 9781470466206: Amazon.com: Books,Euclidean Geometry for Math Olympiads Problem 1.21 - Mathematics Stack Exchange,How Geometry Solved the Most Difficult Number Theory Problem at the IMO 2001 #SoME3