TY - JOUR A1 - Hirsikko, A. A1 - Bergman, T. A1 - Laakso, L. A1 - Dal Maso, M. A1 - Riipinen, I. A1 - Hõrrak, U. A1 - Kulmala, M. T1 - Identification and classification of the formation of intermediate ions measured in boreal forest JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 6 IS - 5 SP - 9187 EP - 9212 Y1 - 2006/09/25 PB - Copernicus Publications SN - 1680-7367 UR - http://www.atmos-chem-phys-discuss.net/6/9187/2006/ L1 - http://www.atmos-chem-phys-discuss.net/6/9187/2006/acpd-6-9187-2006.pdf ER -