Cappelluti, N., Böhringer, H., Schuecker, P., Pierpaoli, E., Mullis, C. R., Gioia, I. M., et al. (2007). The soft X-ray cluster-AGN spatial cross-correlation function in the ROSAT-NEP survey. Astronomy & Astrophysics, 465(1), 35-40. doi:10.1051/0004-6361:20065920.