A new constraint on the time dependence of the proton-to-electron mass ratio - Analysis of the Q 0347-383 and Q 0405-443 spectraA. Ivanchik, P. Petitjean, D. Varshalovich, B. Aracil, R. Srianand, H. Chand, C. Ledoux and P. BoisséA&A, 440 1 (2005) 45-52DOI: https://doi.org/10.1051/0004-6361:20052648
