Wang, Qi, Yafeng Zheng, Chi-Tang Ho, Juqing Huang, Xuefang Guan, Chenchun Lai, Huiying Gao, and Bin Lin. “L-Theanine As a Promising Agent on Brain Health-Promoting Foods – A Review”. Journal of Food Bioactives 130 (March 31, 2021). Accessed December 15, 2024. http://www.isnff-jfb.com/index.php/JFB/article/view/200.