Study of Hubble Space Telescope counterparts to Chandra X-ray sources in the globular cluster M 71R. H. H. Huang, W. Becker, P. D. Edmonds, R. F. Elsner, C. O. Heinke and B. C. HsiehA&A, 513 (2010) A16DOI: https://doi.org/10.1051/0004-6361/200811245