The 6Li/7Li isotopic ratio in the metal-poor binary CS22876–032 J. I. González Hernández, P. Bonifacio, E. Caffau, H.-G. Ludwig, M. Steffen, L. Monaco and R. Cayrel A&A, 628 (2019) A111 Published online: 14 August 2019 DOI: 10.1051/0004-6361/201936011