TY - JOUR A1 - Ortega, I. K. A1 - Kurtén, T. A1 - Vehkamäki, H. A1 - Kulmala, M. T1 - The role of ammonia in sulfuric acid ion induced nucleation JO - Atmos. Chem. Phys. J1 - ACP VL - 8 IS - 11 SP - 2859 EP - 2867 Y1 - 2008/06/05 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/8/2859/2008/ L1 - https://acp.copernicus.org/articles/8/2859/2008/acp-8-2859-2008.pdf DO - 10.5194/acp-8-2859-2008 ER -