Low-energy absorption towards the ultra-compact X-ray binary 4U 1850-087 located in the globular cluster NGC 6712L. Sidoli, N. La Palombara, T. Oosterbroek and A. N. ParmarA&A, 443 1 (2005) 223-230DOI: https://doi.org/10.1051/0004-6361:20053438