Vi, Phung, Nguyen Thuy Ngoc, Truong Thi Kim, Nguyen Thi Quynh, Duong Hong Anh, & Pham Hung Viet. " Determination of PAHs content in hair samples of smokers and non-smokers using gas chromatography in hyphenation with mass spectrometry." VNU Journal of Science: Natural Sciences and Technology [Online], 35.3 (2019): n. pag. Web. 22 Dec. 2024