@inproceedings{masayuki2006calabi–yau,
title={Calabi–Yau threefolds arising from fiber products of rational quasi-elliptic surfaces, I},
author={Masayuki Hirokado, Hiroyuki Ito, and Natsuo Saito},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203619971649915},
booktitle={Arkiv for Matematik},
volume={45},
number={2},
pages={279-296},
year={2006},
}
Masayuki Hirokado, Hiroyuki Ito, and Natsuo Saito. Calabi–Yau threefolds arising from fiber products of rational quasi-elliptic surfaces, I. 2006. Vol. 45. In Arkiv for Matematik. pp.279-296. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203619971649915.