1. 1) C. Tokoro: Resources Processing, 66 (2019), 57-61.
2. 2) Y. Nagai: Proc. MMIJ Annual Meeting (2018), Vol.5, No.1, [1301-07-01].
3. 3) N. Kawabe: Proc. MMIJ Annual Meeting (2017), Vol.4, No.2, [1201-08-08].
4. 4) K. Nagao: Proc. MMIJ Annual Meeting (2019), Vol.6, No.1, [3K0301-10-01].
5. 5) T. Yasutaka and Y. Iwasaki: Resources Processing, 66 (2019), 62-65.