Low frequency follow up of radio haloes and relics in the GMRT Radio Halo Cluster Survey T. Venturi, S. Giacintucci, D. Dallacasa, R. Cassano, G. Brunetti, G. Macario and R. Athreya A&A, 551 (2013) A24 Published online: 13 February 2013 DOI: 10.1051/0004-6361/201219872