1. The Fractal Properties of Internet
   G. Caldarelli, R. Marchetti, L.Pietronero,
   Europhysics Letters 52, 386 (2000)
2. Growing Dynamics of Internet Providers
   A. Capocci, G. Caldarelli, R. Marchetti, L. Pietronero,
   Physical Review E 64, 35105 (2001).
3. Scale-free networks from varying vertex intrinsic fitness.
   G. Caldarelli, A. Capocci, P. De Los Rios, M.A. Muñoz,
   Physical Review Letters 89, 258702 (2002).
4. Universal Scaling Relations in Food Webs.
   D. Garlaschelli, G. Caldarelli, L. Pietronero,
   Nature 423 165 (2003).
5. Topology of correlation based minimal spanning trees in real and model markets.
   G. Bonanno, G. Caldarelli F. Lillo, R. Mantegna,
   Physical Review E 68 046130 (2003).
6. Quantitative description and modeling of real networks.
   A. Capocci, G. Caldarelli, P. De Los Rios,
   Physical Review E 68 047101 (2003).
7. Widespread Occurrence of the Inverse Square Distribution in Social Sciences and Taxonomy.
   G. Caldarelli, C. Caretta Cartozo, P. De Los Rios and V.D.P. Servedio
   Physical Review E 69, 035101 (2004).
8. Structure of cycles and local ordering in complex networks.
   G. Caldarelli, R. Pastor-Satorras, A. Vespignani,
   European Physical Journal B 38 183-186 (2004).
9. Networks of equities in financial markets
   G. Bonanno, G. Caldarelli, F. Lillo, S. Micciche`, N. Vandewalle, R. N. Mantegna
   European Physical Journal B 38 363-372 (2004).
10. The Drainage Basins Trees in Mars Channel Networks.
    G. Caldarelli, P. De Los Rios, M. Montuori, V.D.P. Servedio,
    European Physical Journal B 38 387-391 (2004).
11. Preferential Exchange: Strengthening Connections in Complex Networks
    G. Caldarelli, F. Coccetti and P. De Los Rios,
    Physical Review E, 70 027102 (2004)
12. Assortative model for social networks.
    M. Catanzaro G. Caldarelli, L. Pietronero,
    Physical Review E 70 037101 (2004).
13. Vertex Intrinsic fitness: How to produce arbitrary scale-free networks
    V.D.P. Servedio G. Caldarelli, P. Buttà,
    Physical Review E 70 056126 (2004).
14. The Corporate board networks
    G. Caldarelli, M. Catanzaro,
    Physica A 338 98-106 (2004).
15. Social network growth with assortative mixing
    M. Catanzaro, G. Caldarelli, L. Pietronero,
    Physica A 338 119-124 (2004).
16. The scale-free Topology of market investments.
    D. Garlaschelli, S. Battiston, M. Castri, V.D.P. Servedio and G. Caldarelli,
    Physica A 350 491-499 (2005).
17. Detecting communities in large networks.
    A. Capocci, V.D.P. Servedio, G. Caldarelli and F. Colaiori
    Physica A 352 669-676 (2005).
18. Food Web Topology.
    D. Garlaschelli, G. Caldarelli, L. Pietronero,
    Nature 435 E4 (2005).
19. Number of h-cycles in the Internet at the Autonomous System Level.
    G. Bianconi, G. Caldarelli, A. Capocci,
    Physical Review E 71 066116 (2005).
20. Preferential attachment in the growth of social networks: The internet encyclopedia Wikipedia.
    A. Capocci, V. D. P. Servedio, F. Colaiori, L. S. Buriol, D. Donato, S. Leonardi, G. Caldarelli.
    Physical Review E 74 036116 (2005).