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. Discuss. J1 - ACPD VL - 8 IS - 2 SP - 5413 EP - 5436 Y1 - 2008/03/17 PB - Copernicus Publications SN - 1680-7367 UR - http://www.atmos-chem-phys-discuss.net/8/5413/2008/ L1 - http://www.atmos-chem-phys-discuss.net/8/5413/2008/acpd-8-5413-2008.pdf ER -