The radio properties of infrared-faint radio sources E. Middelberg, R. P. Norris, C. A. Hales, N. Seymour, M. Johnston-Hollitt, M. T. Huynh, E. Lenc and M. Y. Mao A&A, 526 (2011) A8 Published online: 13 December 2010 DOI: 10.1051/0004-6361/201014926