Spontaneous light scattering from propagating density fluctuations in an optical lattice C. Jurczak, J.-Y. Courtois, B. Desruelle, C.I. Westbrook and A. Aspect Eur. Phys. J. D, 1 1 (1998) 53-56 Published online: 15 January 1998 DOI: 10.1007/s100530050063