Thuy, Nguyen Van, et al. “Preliminary Chemical, Total Polyphenol, Total Flavonoid Contents and Antioxidant Activity of Eucalyptus Camaldulensis Dehnh”. Asian Journal of Chemistry, vol. 32, no. 5, Apr. 2020, pp. 1230-4, https://asianpubs.org/index.php/ajchem/article/view/2522.