HST, VLT, and NTT imaging search for wide companions to bona-fide and candidate brown dwarfs in the Cha I dark cloudR. Neuhäuser, W. Brandner, J. Alves, V. Joergens and F. ComerónA&A, 384 3 (2002) 999-1011DOI: https://doi.org/10.1051/0004-6361:20020060
