UVES radial velocity accuracy from asteroid observations - I. Implications for fine structure constant variabilityP. Molaro, S. A. Levshakov, S. Monai, M. Centurión, P. Bonifacio, S. D'Odorico and L. MonacoA&A, 481 2 (2008) 559-569DOI: https://doi.org/10.1051/0004-6361:20078864