A collection of Problems Suggested for the International Mathematical Olympiads 1959-2004 - Peter Winkler [IMG] 0B2TsS2c_raqxNEd4bmo0ZFo5VHM...
A collection of Problems Suggested for the international Mathematical Olympiads 1959-2009 - Peter Winkler [IMG] 0B2TsS2c_raqxVVk0eW5ZTi0tZkk...