Thuan, Tong Kim, and Tran Thanh Thuy. “Determination of the Pigment Carotenoid Astaxanthin Content in the Cells of the Yeast Strain Phaffia Rhodozyma NT5 Used As Additive Foods in Aquaculture”. Academia Journal of Biology 29, no. 1 (November 12, 2014): 82–88. Accessed September 18, 2021. https://vjs.vjs.ac.vn/index.php/vjbio/article/view/5364.