Coherent Structures in Complex Systems Selected Papers of the XVII Sitges Conference on Statistical Mechanics Held at Sitges, Barcelona, Spain, 5-9 June 2000. Preliminary Version - Reguera, D.; Reguera, D.; Bonilla, L.L; Bonilla, L.L; Rubi, J.M; Rubi, J.M (Springer Berlin Heidelberg : Imprint: Springer, 2001)