TY - JOUR A1 - Gagné, S. A1 - Leppä, J. A1 - Petäjä, T. A1 - McGrath, M. J. A1 - Vana, M. A1 - Kerminen, V.-M. A1 - Laakso, L. A1 - Kulmala, M. T1 - Measurements of aerosol charging states in Helsinki, Finland JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 11 IS - 5 SP - 15875 EP - 15920 Y1 - 2011/05/26 PB - Copernicus Publications SN - 1680-7375 UR - http://www.atmos-chem-phys-discuss.net/11/15875/2011/ L1 - http://www.atmos-chem-phys-discuss.net/11/15875/2011/acpd-11-15875-2011.pdf DO - 10.5194/acpd-11-15875-2011 ER -