@inproceedings{j2007einstein,
title={Einstein metrics on connected sums of $ S^ 2\ times S^ 3$},
author={J Kollár},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160908192708020059663},
booktitle={Journal of Differential Geometry},
volume={75},
pages={259-272},
year={2007},
}