Wang, J., Ho, S. S. H., Ma, S., Cao, J., Dai, W., Liu, S., … Han, Y. (2016). Characterization of PM2.5 in Guangzhou, China: uses of organic markers for supporting source apportionment. Science of the Total Environment, 550, 961-971. https://doi.org/10.1016/j.scitotenv.2016.01.138