%0 Book Section %@ 0-7354-0121-7 %A Caldarelli, Guido %B Modeling of complex systems: seventh Granada lectures %D 2003 %E Garrido, Pedro L. %E Marro, Joaquín %F eprints:1192 %I American Institute of Physics %K PACS: 89.75.Hc Networks and genealogical trees %P 17-23 %T Introduction to complex networks %U http://eprints.imtlucca.it/1192/ %V 661 %X We present here an introduction to the ideas and models that physicist developed in order to describe the graph or network structure in a variety of different systems. Firstly we give a very basic list of definition that can be of some help in approaching this field. After that we present a brief review of the state of art for the models. © 2003 American Institute of Physics %Z Proceedings of the VII Granada Seminar on Computational Physics, 2-7 September 2002, Granada, Spain