Phys Rev E: Information-theoretic approach to network modularity
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Uses diffusion distance in relationship to modularity -- http://arxiv.org/PS_cache/q-bio/pdf/0411/0411033.pdf http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15903736&dopt=Citation
