Searching for absorbed AGN in the 2XMM-Newton pre-release EPIC Serendipitous Source CatalogueE. Memola, A. Caccianiga, F. Cocchia, R. Della Ceca, T. Maccacaro, P. Severgnini, D. J. Fyfe, S. Mateos, M. G. Watson and G. LamerA&A, 465 3 (2007) 759-764DOI: https://doi.org/10.1051/0004-6361:20066571
