Resolved Hubble space spectroscopy of ultracool binary systemsE. L. Martín, W. Brandner, H. Bouy, G. Basri, J. Davis, R. Deshpande and M. M. MontgomeryA&A, 456 1 (2006) 253-259DOI: https://doi.org/10.1051/0004-6361:20054186