Near-IR spectroscopy of OH/IR stars in the Galactic centre E. Vanhollebeke, J. A. D. L. Blommaert, M. Schultheis, B. Aringer and A. Lançon A&A, 455 2 (2006) 645-652 Published online: 04 August 2006 DOI: 10.1051/0004-6361:20065194