Kulmala, M. [P:(DE-HGF)0] ; Laakso, L. [P:(DE-HGF)0] ; Lehtinen, K. E. J. [P:(DE-HGF)0] ; Riipinen, I. [P:(DE-HGF)0] ; Dal Maso, M. [P:(DE-HGF)0] ; Anttila, T. [P:(DE-Juel1)VDB45939] ; Kerminen, V.-M. [P:(DE-HGF)0] ; Horrak, U. [P:(DE-HGF)0] ; Vana, M. [P:(DE-HGF)0] ; Tammet, H. [P:(DE-HGF)0]