Spectroscopic identification of INTEGRAL high-energy sources with VLT/ISAAC F. Fortin, S. Chaty, A. Coleiro, J. A. Tomsick and C. H. R. Nitschelm A&A, 618 (2018) A150 Published online: 26 October 2018 DOI: 10.1051/0004-6361/201731265