Caldarelli, Guido <br/><br/>
Scale-free networks  : complex webs in nature and technology / 

 - Oxford :  Oxford University Press,  2007 
 - xiv, 309p. Bibl. Index. 
<br/><br/><label>ISBN: </label>9780199665174 
<br/><br/><label>Dewey Class. No.: </label>519.50182  / C145.SN