Spectroscopic confirmation of a galaxy cluster associated with 7C 1756+6520 at z = 1.416 A. Galametz, D. Stern, S. A. Stanford, C. De Breuck, J. Vernet, R. L. Griffith and F. A. Harrison A&A, 516 (2010) A101 Published online: 21 July 2010 DOI: 10.1051/0004-6361/201014356