Li, Xiao-Lan, Yun Zhou, Zhi-Yan Chen, Qi-Bin Liu, Wen-Jing Zhu, Gui-Feng Huang, and Jun Yang. 2015. “Fast Separation and Determination of Four Tobacco-Specific Nitrosamines in Cigarette Smoke Using UPLC-MS MS”. Asian Journal of Chemistry 27 (9):3293-96. https://doi.org/10.14233/ajchem.2015.18578.