@Article{acp-8-2859-2008,
AUTHOR = {Ortega, I. K. and Kurt\'en, T. and Vehkam\"aki, H. and Kulmala, M.},
TITLE = {The role of ammonia in sulfuric acid ion induced nucleation},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {8},
YEAR = {2008},
NUMBER = {11},
PAGES = {2859--2867},
URL = {http://www.atmos-chem-phys.net/8/2859/2008/},
DOI = {10.5194/acp-8-2859-2008}
}