Detector calibration at INM using a correlated photons source A. Ghazi-Bellouati, A. Razet, J. Bastie and M. E. Himbert Eur. Phys. J. Appl. Phys., 35 3 (2006) 211-216 Published online: 23 August 2006 DOI: 10.1051/epjap:2006090