The spatial clustering of X-ray selected AGN in the XMM-COSMOS field R. Gilli, G. Zamorani, T. Miyaji, J. Silverman, M. Brusa, V. Mainieri, N. Cappelluti, E. Daddi, C. Porciani, L. Pozzetti et al. (63 more) A&A, 494 1 (2009) 33-48 Published online: 04 December 2008 DOI: 10.1051/0004-6361:200810821