انتشارات Xyz
Problems from the book
Aigner M., Ziegler G.M., 2008
Problems from the book
Titu Andreescu, 2008
Problems from the Book
Titu Andreescu, 2008
Lemmas in Olympiad Geometry
Andreescu T., Korsky S., Pohoata C., 2016
Straight from the Book
Titu Andreescu, Gabriel Dospinescu, 2012
Number Theory: Concepts and Problems
Titu Andreescu, Gabriel Dospinescu, Oleg Mushkarov, 2017
107 Geometry Problems from the AwesomeMath Year Round Program
Titu Andreescu, Michal Rolinek, Josef Tkadlec, 2013
Mathematical Induction: A powerful and elegant method of proof
Titu Andreescu, Vlad Crisan, 2017
