Building the cosmic infrared background brick by brick with Herschel/PEP S. Berta, B. Magnelli, R. Nordon, D. Lutz, S. Wuyts, B. Altieri, P. Andreani, H. Aussel, H. Castañeda, J. Cepa et al. (17 more) A&A, 532 (2011) A49 Published online: 22 July 2011 DOI: 10.1051/0004-6361/201116844