Benoit Donnet Timur Friedman Internet topology discovery: A survey. 56-69 2007 9 IEEE Communications Surveys and Tutorials 1-4 http://dl.comsoc.org/cocoon/comsoc/servlets/OntologySearch?query=&node=TOC1908&render=false&type=1 db/journals/comsur/comsur9.html#DonnetF07