Effects of propylene glycol, vegetable glycerin, and nicotine on emissions and dynamics of electronic cigarette aerosols. 

Effects of propylene glycol, vegetable glycerin, and nicotine on emissions and dynamics of electronic cigarette aerosols. 
Li, L., Lee, E. S., Nguyen, C., & Zhu, Y. (2020). Aerosol Science and Technology, 54(11), 1270-1281.