@article{23318, 
year={2004},
issn={1972-4837},
journal={GRUPPI},
number={3},
volume={VI},
doi={},
title={Presentazione del numero},
abstract={}
url={http://www.francoangeli.it/Riviste/Scheda_rivista.aspx?idArticolo=23318},
author={Renato De Polo}
pages={},
language={IT}}