The lack of close binaries among hot horizontal branch stars in NGC 6752 C. Moni Bidin, S. Moehler, G. Piotto, A. Recio-Blanco, Y. Momany and R. A. Méndez A&A, 451 2 (2006) 499-513 Published online: 02 May 2006 DOI: 10.1051/0004-6361:20053940