http://www.ebook3000.com/International-Mathematical-Olympiads-1959-1977_10527.html
http://www.pdf-search-engine.com/math-olympiad-pdf.html
http://knowfree.net/2008/04/19/mathematical-olympiad-in-china-problems-and-solutions.kf
One year anniversary of the group! 1st October 2008-1st October 2009