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Conference paperEfficiently answering reachability queries on very large directed graphsRuoming Jin, Yang Xiang, et al.SIGMOD 2008
Conference paperPairwise symmetry decomposition method for generalized covariance analysisTsuyoshi IdéICDM 2005
Conference paperDual labeling: Answering graph reachability queries in constant timeHaixun Wang, Hao He, et al.ICDE 2006
