@techreport{TechReport_LocCentr,
 author = {Panagiotis Pantazopoulos and and Merkourios Karaliopoulos and Ioannis Stavrakakis},
 title = {Assessing the value of localized centrality metrics},
 month = {April},
 year = {2011},
 url ={http://cgi.di.uoa.gr/~istavrak/publications.html},
 }