Mathematical olympiad in China (2011-2014): problems and solutions fromMathematical Olympiad Series 0 Type: Book
University of Toronto mathematics competition (2001-2015) by Barbeau, Edward Joseph fromProblem books in mathematics 0 Type: Book
Problems of number theory in mathematical competitions by Yu, Hong-Bing, Lin, Lei fromMathematical Olympiad Series 0 Type: Book
Mathematical olympiad in China (2009-2010): problems and solutions fromMathematical Olympiad Series 0 Type: Book