No disks around low-mass stars and brown dwarfs in the young σ Orionis cluster?J. M. Oliveira, R. D. Jeffries, M. J. Kenyon, S. A. Thompson and T. NaylorA&A, 382 3 (2002) L22-L25DOI: https://doi.org/10.1051/0004-6361:20011778
