Links
Associazione culturale Arte e Scienza
CeNDEF (Center for Nonlinear Dynamics in Economics and Finance)
Centro Internazionale di Studi Urbino e la prospettiva
Fondazione Leonardo Sinisgalli
SCTPLS (Society for Chaos Theory in Psicology and Life Sciences)
SICC (Italian Society for Chaos and Complexity)
The MacTutor History of Mathematics Archive of St. Andrew University