Thi Quynh, Nguyen, Nguyen Thi Mai, Phan Thi Lan Anh, Duong Hong Anh, Nguyen Thuy Ngoc, & Pham Hung Viet. " Optimizing the Analysis of Polycyclic Aromatic Hydrocarbons in Tea Samples." VNU Journal of Science: Natural Sciences and Technology [Online], 35.2 (2019): n. pag. Web. 22 Dec. 2024