Mathematical Olympiad In China (2011-2014): Problems And Solutions (Mathematical Olympiad Series) by Xiong Bin English | 2018 | ISBN: 9813143746 | 368 Pages | PDF | 4 MB
The Colorado Mathematical Olympiad and Further Explorations: From the Mountains of Colorado to the Peaks of Mathematics By Alexander Soifer (auth.) 2011 | 408 Pages | ISBN: 0387754717 | PDF | 4 MB