Dust in brown dwarfs - IV. Dust formation and driven turbulence on mesoscopic scales Ch. Helling, R. Klein, P. Woitke, U. Nowak and E. Sedlmayr A&A, 423 2 (2004) 657-675 Published online: 06 August 2004 DOI: 10.1051/0004-6361:20034514