The soft X-ray cluster-AGN spatial cross-correlation function in the ROSAT-NEP survey N. Cappelluti, H. Böhringer, P. Schuecker, E. Pierpaoli, C. R. Mullis, I. M. Gioia and J. P. Henry A&A, 465 1 (2007) 35-40 Published online: 22 January 2007 DOI: 10.1051/0004-6361:20065920