Thi Quynh, Nguyen, 		Thi Mai, Nguyen, 		Thi Lan Anh, Phan, 		Hong Anh, Duong, 		Thuy Ngoc, Nguyen, AND 		Hung Viet, Pham.
" Optimizing the Analysis of Polycyclic Aromatic Hydrocarbons in Tea Samples" <em>VNU Journal of Science: Natural Sciences and Technology</em> [Online], Volume 35 Number 2 (27 June 2019)