TY - JOUR A1 - Lanz, V. A. A1 - Buchmann, B. A1 - Hueglin, C. A1 - Locher, R. A1 - Reimann, S. A1 - Staehelin, J. T1 - Factor analytical modeling of C2–C7 hydrocarbon sources at an urban background site in Zurich (Switzerland): changes between 1993–1994 and 2005–2006 JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 8 IS - 1 SP - 907 EP - 955 Y1 - 2008/01/18 PB - Copernicus Publications SN - 1680-7367 UR - http://www.atmos-chem-phys-discuss.net/8/907/2008/ L1 - http://www.atmos-chem-phys-discuss.net/8/907/2008/acpd-8-907-2008.pdf ER -