Asmi, A.; Wiedensohler, A; Laj, P; Fjæraa, Ann Mari; Sellegri, K; Birmili, W; Weingartner, E; Baltensperger, U; Zdimal, V; Zikova, N.; Putaud, Jean-Philippe; Marinoni, A; Tunved, P; Hansson, H.C.; Fiebig, Markus; Kivekäs, N.; Lihavainen, H.; Asmi, E.; Ulevicius, V.; Aalto, P. P.; Swietlicki, E; Kristensson, A.; Mihalopoulos, N; Kalivitis, N.; Kalapov, I.; Kiss, G.; de Leeuw, G.; Henzing, B.; Harrison, R. M.; Beddows, D.; O'Dowd, C; Jennings, S.G.; Flentje, H.; Weinhold, K.; Meinhardt, F; Ries, L; Kulmala, M. (Journal article; Peer reviewed, 2011)