Networks from Alex Arenas, Univeristy Rovira i Virgili, Tarragona, Spain
http://deim.urv.cat/~aarenas/data/welcome.htm

PGPgiantcompo:

    Graph of the largest component of the network of users of the
    Pretty-Good-Privacy algorithm for secure information interchange.
    Reference: M. Boguna, R. Pastor-Satorras, A.  Diaz-Guilera and
    A. Arenas, Physical Review E, vol. 70, 056122 (2004).

jazz:

    Network of Jazz musicians.
    Reference: P.Gleiser and L. Danon , Adv. Complex Syst.6, 565 (2003).

celegans_metabolic:

    Graph of the metabolic network of C.elegans.
    Reference: Community identification using Extremal Optimization,
    J. Duch and A. Arenas, Physical Review E , vol. 72, 027104, (2005).

email:

    Network of e-mail interchanges between members of
    the Univeristy Rovira i Virgili (Tarragona).
    Reference: R. Guimera, L. Danon, A. Diaz-Guilera, F. Giralt and A. Arenas
    Physical Review E , vol. 68, 065103(R), (2003).

All data compiled by members of Alex Arenas' group.