Cold gas in a complete sample of group-dominant early-type galaxies E. O’Sullivan, F. Combes, P. Salomé, L.P. David, A. Babul, J. M. Vrtilek, J. Lim, V. Olivares, S. Raychaudhury and G. Schellenberger A&A, 618 (2018) A126 Published online: 23 October 2018 DOI: 10.1051/0004-6361/201833580