1. [1] ISO 20480-1, Fine Bubble Technology - General Principles for Usage and Measurement of Fine Bubble - Part 1: Terminology (2017).
2. [2] Terasaka, K., Trends and Challenges of Fine Bubble Technology, Chemical Engineering of Japan, Vol.78 (9), 580-584 (2014).
3. [3] Kakuta, N., Application of Ultra Fine Bubble Technology to the Expressway Management : Cleaning Field, Chemical Engineering of Japan, Vol.78 (9), 589-592 (2014).
4. [4] Hayashi, M., Front Load Washer Dryer with “Ultra Fine Bubble Double Wash Technology”, Official Journal of the Japan Institute of Energy “Enermix”, Vol. 98, 297-301 (2019).
5. [5] Hata, T., Nishiuchi, Y., Tanaka, K., Okamura, Y., Sakakibara, Y. and Terasaka, K., Research on Cleaning and Purification Using Fine Bubbles, Japanese Journal of Multiphase Flow, Vol. 32(1), 4-11 (2018).