"art\u00EDculu cient\u00EDficu"@ast . . "A. Lamastra" . . . . . "10.1086/497586" . "The HELLAS2XMM Survey. VII. The Hard X\u2010Ray Luminosity Function of AGNs up toz= 4: More Absorbed AGNs at Low Luminosities and High Redshifts"@nl . . . . "The HELLAS2XMM Survey. VII. The Hard X\u2010Ray Luminosity Function of AGNs up toz= 4: More Absorbed AGNs at Low Luminosities and High Redshifts"@en . "astro-ph/0509081" . . "im Dezember 2005 ver\u00F6ffentlichter wissenschaftlicher Artikel"@de . "2005ApJ...635..864L" . . . . . . "G. Matt" . "864\u2013879" . . . "scientific article published in the Astrophysical Journal"@en . . . "G. C. Perola" . "The HELLAS2XMM Survey. VII. The Hard X\u2010Ray Luminosity Function of AGNs up toz= 4: More Absorbed AGNs at Low Luminosities and High Redshifts"@en . . . . . . . . "2005-12-20T00:00:00Z"^^ . "wetenschappelijk artikel"@nl . . "The HELLAS2XMM Survey. VII. The Hard X\u2010Ray Luminosity Function of AGNs up toz= 4: More Absorbed AGNs at Low Luminosities and High Redshifts"@nl . . "N. Carangelo" . . "F. Cocchia" . . . . . . "article publi\u00E9 dans la revue scientifique Astrophysical Journal"@fr . . "C. Vignali" . . . . "635" . . "2" . "The HELLAS2XMM Survey. VII. The Hard X\u2010Ray Luminosity Function of AGNs up toz= 4: More Absorbed AGNs at Low Luminosities and High Redshifts"@nl . . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0432 \u0433\u0440\u0443\u0434\u043D\u0456 2005"@uk . . . "The HELLAS2XMM Survey. VII. The Hard X\u2010Ray Luminosity Function of AGNs up toz= 4: More Absorbed AGNs at Low Luminosities and High Redshifts"@en . . "The HELLAS2XMM Survey. VII. The Hard X\u2010Ray Luminosity Function of AGNs up toz= 4: More Absorbed AGNs at Low Luminosities and High Redshifts"@en . . "N. Sacchi" . . .