Lithium abundances of halo dwarfs based on excitation temperature - I. Local thermodynamic equilibriumA. Hosford, S. G. Ryan, A. E. García Pérez, J. E. Norris and K. A. OliveA&A, 493 2 (2009) 601-612DOI: https://doi.org/10.1051/0004-6361:200810240