Experimental demonstration of sub-shot-noise intensity correlations in an intense twin beam M. Bondani, A. Allevi, G. Zambra, A. Andreoni, J. Peřina, J. Křepelka and J. Peřina Jr. Eur. Phys. J. Special Topics, 160 (2008) 33-41 Published online: 18 June 2008 DOI: 10.1140/epjst/e2008-00707-x