1. 1) I. Ohnaka: J. JFS 87 (2015) 265–286.
2. 2) Y. Otsuka: J. JFS 78 (2006) 609–614.
3. 3) Y. Maeda and Y. Otsuka: Int. J. Automat. Technol. 2 (2008) 247–252.
4. 4) N. Kondo and Y. Maeda: Report of 168th meeting, Japan Foundry Engineering Society, (2016) 54.
5. 5) N. Kondo and Y. Maeda: The 14th Asian Foundry Congress, Incheon, (2017) November.