Y. Xie, H. Tong, X. Yan, X. Yang, B. Ding, and S. Liu, “Determination of 14 Polycyclic Aromatic Hydrocarbons in Mainstream Smoke from Flue-Cured Cigarettes by GC-MS Using a New Internal Standard”, ajc, vol. 24, no. 8, pp. 3499–3503, Apr. 2012.