New constraints on the formation and settling of dust in the atmospheres of young M and L dwarfs E. Manjavacas, M. Bonnefoy, J. E. Schlieder, F. Allard, P. Rojo, B. Goldman, G. Chauvin, D. Homeier, N. Lodieu and T. Henning A&A, 564 (2014) A55 Published online: 04 April 2014 DOI: 10.1051/0004-6361/201323016