The XMM deep survey in the CDF-S - IV. Compton-thick AGN candidates I. Georgantopoulos, A. Comastri, C. Vignali, P. Ranalli, E. Rovilos, K. Iwasawa, R. Gilli, N. Cappelluti, F. Carrera, J. Fritz et al. (8 more) A&A, 555 (2013) A43 Published online: 27 June 2013 DOI: 10.1051/0004-6361/201220828