Understanding the Semantics in Reference Linkages: An Ontological Approach for Scientific Digital Libraries. - Peixiang Zhao 002; Ming Zhang 004; Dongqing Yang; Shiwei Tang (ICADL, 2004)

PKUSpace: A Collaborative Platform for Scientific Researching. - Ming Zhang 004; Dongqing Yang; Zhi-Hong Deng 001; Ying Feng; Wenqing Wang; Peixiang Zhao 002; Sai Wu; Shu-an Wang; Shi-Wei Tang (ICWL, 2004)

Finding Hidden Semantics Behind Reference Linkages : An Ontological Approach for Scientific Digital Libraries. - Peixiang Zhao 002; Ming Zhang 004; Dongqing Yang; Shiwei Tang (DASFAA, 2005)

Mining Closed Frequent Free Trees in Graph Databases. - Peixiang Zhao 002; Jeffrey Xu Yu (DASFAA, 2007)

Graph Indexing: Tree + Delta >= Graph. - Peixiang Zhao 002; Jeffrey Xu Yu; Philip S. Yu (VLDB, 2007)

Free tree-featured graph indexing and query processing. - Peixiang Zhao 002 (2007)

Fast Frequent Free Tree Mining in Graph Databases. - Peixiang Zhao 002; Jeffrey Xu Yu (World Wide Web, 2008)