1. 1) Ministry of Economy, Trade and Industry:White Paper on International Economy and Trade, (2021), 116.
2. 2) Tsuruya, T., Danseko, M., Sakai, K., Honda, S. and Takeda, R.:J. Adv. Mech. Des. Syst. Manuf., 13-3 (2019), 19-00205.
3. 3) Yanmin, X., Wei, T., Fei, Z., BeiBei, P., Yaopeng, Y. and Meiqiang, F.:Int. J. Precis. Eng. Manuf., 20 (2019), 285-299.
4. 4) Vijaya, P. P., Pradip, P. P. and Nilesh, E. I.:Proc. 2019 9th Annu. Inf. Technol. Electromec. Eng. Microelectron. Conf., 2019, (2019), DOI:10.1109/IEMECONX.2019.8876992.
5. 5) Unterberg, M., Niemietz, P., Trauth, D., Wehrle, K. and Bergs, T.:Prod. Eng., 13 (2019), 743-749.