@Article{acpd-8-907-2008,
AUTHOR = {Lanz, V. A. and Buchmann, B. and Hueglin, C. and Locher, R. and Reimann, S. and Staehelin, J.},
TITLE = {Factor analytical modeling of C$_{2}$–C$_{7}$ hydrocarbon sources at an urban background site in Zurich (Switzerland): changes between 1993–1994 and 2005–2006},
JOURNAL = {Atmospheric Chemistry and Physics Discussions},
VOLUME = {8},
YEAR = {2008},
NUMBER = {1},
PAGES = {907--955},
URL = {http://www.atmos-chem-phys-discuss.net/8/907/2008/},
ISSN = {1680-7367}
}