TY - JOUR A1 - Kurtén, T. A1 - Torpo, L. A1 - Sundberg, M. R. A1 - Kerminen, V.-M. A1 - Vehkamäki, H. A1 - Kulmala, M. T1 - Estimating the NH3:H2SO4 ratio of nucleating clusters in atmospheric conditions using quantum chemical methods JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 10 SP - 2765 EP - 2773 Y1 - 2007/05/25 PB - Copernicus Publications SN - 1680-7324 UR - http://www.atmos-chem-phys.net/7/2765/2007/ L1 - http://www.atmos-chem-phys.net/7/2765/2007/acp-7-2765-2007.pdf DO - 10.5194/acp-7-2765-2007 ER -