%0 Book Section %A Battiston, Stefano %A Caldarelli, Guido %B Networks of networks: the last frontier of complexity %D 2014 %F eprints:2096 %I Springer %K Complex Networks; Complexity; Complex Systems; Game Theory/Mathematical Methods %P 311-321 %S Understanding complex systems %T Financial Networks %U http://eprints.imtlucca.it/2096/ %V 3 %X The financial system performs vital functions for the world economy. Very often one of more aspect of this system can be described by means of a complex graph. In this chapter under the generic name of financial networks we indicate several different systems all related to the world of finance