Belous, Oksana, and Natalia Platonova. “Biologically Active Substances of Camellia Sinensis in a Humid Subtropical Climate of Russia”. Potravinarstvo Slovak Journal of Food Sciences 15 (April 28, 2021): 360–368. Accessed October 7, 2022. https://potravinarstvo.com/journal1/index.php/potravinarstvo/article/view/1440.