How Important Nucleation is for Regional/global Modelling? Pirjola, L. ; Lehtinen, K. E. J. ; Hansson, H. -C. ; Kulmala, M. Abstract Publication: Journal of Aerosol Science Pub Date: July 2004 DOI: 10.1016/S0021-8502(19)30160-0 Bibcode: 2004JAerS..35S.829P