Investigating halo substructures with annual modulation signature R. Bernabei, P. Belli, F. Montecchia, F. Nozzoli, F. Cappella, A. Incicchitti, D. Prosperi, R. Cerulli, C.J. Dai, H.L. He et al. (6 more) Eur. Phys. J. C, 47 1 (2006) 263-271 Published online: 19 May 2006 DOI: 10.1140/epjc/s2006-02559-9