The XMM-Newton view of PG quasars - I. X-ray continuum and absorption E. Piconcelli, E. Jimenez-Bailón, M. Guainazzi, N. Schartel, P. M. Rodríguez-Pascual and M. Santos-Lleó A&A, 432 1 (2005) 15-30 Published online: 22 February 2005 DOI: 10.1051/0004-6361:20041621