1. 1) H. Nakae: Chuutetsu no Zaishitsu, (Japan Foundry Engineering Society, Tokyo, 2012) p. 24.
2. 2) T. Kowata, Y. Lei, S. Hiratsuka and S. Fujishima: J. JFS 89 (2017) 689–694.
3. 3) T. Kanno and I. Kang: J. JFS 85 (2013) 414–419.
4. 4) H. Horie, S. Hiratsuka and T. Kowata: J. JFS 84 (2012) 687–692.
5. 5) H. Horie: J. JFS 68 (1996) 1056–1062.