@article{c1098b9d17544c63a259bfb7afce11a1,
title = "Ultra-cool dwarfs: new discoveries, proper motions and improved spectral typing from SDSS and 2MASS photometric colors",
keywords = "brown dwarfs, UKIDSS, digital sky survey",
author = "Z.H. Zhang and R.S. Pokorny and H.R.A. Jones and D.J. Pinfield and P.S. Chen and Z. Han and D. Chen and M.C. Galvez-Ortiz and B. Burningham",
note = "Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO) DOI: 10.1051/0004-6361/200810314",
year = "2009",
doi = "10.1051/0004-6361/200810314",
language = "English",
volume = "497",
pages = "619--633",
journal = "Astronomy \& Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
number = "2",
}