A search for dormant binaries with degenerate components in ω Centauri and NGC 6397 M. Rozyczka, J. Kaluzny, P. Pietrukowicz, W. Pych, M. Catelan, C. Contreras and I. B. Thompson A&A, 524 (2010) A78 Published online: 24 November 2010 DOI: 10.1051/0004-6361/201015295