@Article{acp-12-5055-2012,
AUTHOR = {Querol, X. and Moreno, T. and Karanasiou, A. and Reche, C. and Alastuey, A. and Viana, M. and Font, O. and Gil, J. and de Miguel, E. and Capdevila, M.},
TITLE = {Variability of levels and composition of PM$_{10}$ and PM$_{2.5}$ in the Barcelona metro system},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {12},
YEAR = {2012},
NUMBER = {11},
PAGES = {5055--5076},
URL = {http://www.atmos-chem-phys.net/12/5055/2012/},
DOI = {10.5194/acp-12-5055-2012}
}