Radio-loud AGN in the XMM-LSS field - II. A dichotomy in environment and accretion mode? C. Tasse, P. N. Best, H. Röttgering and D. Le Borgne A&A, 490 3 (2008) 893-904 Published online: 01 July 2008 DOI: 10.1051/0004-6361:20079299