Molecular gas in radio galaxies in dense megaparsec-scale environments at z = 0.4–2.6 G. Castignani, F. Combes, P. Salomé, C. Benoist, M. Chiaberge, J. Freundlich and G. De Zotti A&A, 623 (2019) A48 Published online: 04 March 2019 DOI: 10.1051/0004-6361/201834066