1. Notification No. 65 (2011) The Japanese Pharmacopia, 16th ed. “Glycyrrhiza”, Ministry of Health and Welfare, Japan, pp 1649–1650.
https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/0000066597.html
. Accessed 24 Mar 2016
2. Yamamoto Y, Ko H, Sasaki H, Takeda O, Higuchi Y, Mukaida Y, Yamaguchi Y, Shiratori M (2019) Survey on crude drug usage in Japan. Shoyakugaku Zasshi 73:16–35
3. Yoshimatsu K (2010) A cultivation apparatus and a cultivation method. Japan Kokai Tokkyo Koho JP 2010-273648 (Patent number)
4. Sawada H, Saito T, Kudo T. Ono T, Yoshimatsu K (2012) A hydroponics system and the hydroponics method. Japan Kokai Tokkyo Koho JP 2012-100573 (Patent number)
5. Yoshimatsu K (2012) Innovative cultivation: hydroponics of medicinal plants in the closed-type cultivation facilities. J Trad Med 29:30–34