Probing variability patterns of the Fe K line complex in bright nearby AGNs B. De Marco, K. Iwasawa, M. Cappi, M. Dadina, F. Tombesi, G. Ponti, A. Celotti and G. Miniutti A&A, 507 1 (2009) 159-169 Published online: 08 September 2009 DOI: 10.1051/0004-6361/200912188