@Article{acpd-6-9937-2006, AUTHOR = {Ehn, M. and Petäjä, T. and Aufmhoff, H. and Aalto, P. and Hämeri, K. and Arnold, F. and Laaksonen, A. and Kulmala, M.}, TITLE = {Hygroscopic properties of ultrafine aerosol particles in the boreal forest: diurnal variation, solubility and the influence of sulfuric acid}, JOURNAL = {Atmospheric Chemistry and Physics Discussions}, VOLUME = {6}, YEAR = {2006}, NUMBER = {5}, PAGES = {9937--9965}, URL = {http://www.atmos-chem-phys-discuss.net/6/9937/2006/}, ISSN = {1680-7367} }