Debora Donato Luigi Laura Stefano Leonardi Ulrich Meyer Stefano Millozzi Jop F. Sibeyn Algorithms and Experiments for the Webgraph. 219-236 2006 10 J. Graph Algorithms Appl. 2 http://jgaa.info/accepted/2006/Donato+2006.10.2.pdf db/journals/jgaa/jgaa10.html#DonatoLLMMS06