Conservation of energy in coherent backscattering of light S. Fiebig, C. M. Aegerter, W. Bührer, M. Störzer, E. Akkermans, G. Montambaux and G. Maret EPL, 81 6 (2008) 64004 Published online: 22 February 2008 DOI: 10.1209/0295-5075/81/64004