@Article{acp-7-4311-2007,
AUTHOR = {Chevalier, A. and Gheusi, F. and Delmas, R. and Ord\'o\~nez, C. and Sarrat, C. and Zbinden, R. and Thouret, V. and Athier, G. and Cousin, J.-M.},
TITLE = {Influence of altitude on ozone levels and variability in the lower troposphere: a ground-based study for western Europe over the period 2001–2004},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {7},
YEAR = {2007},
NUMBER = {16},
PAGES = {4311--4326},
URL = {http://www.atmos-chem-phys.net/7/4311/2007/},
DOI = {10.5194/acp-7-4311-2007}
}