On the transitive closure representation and adjustable compression. - Yangjun Chen; Donovan Cooke (SAC, 2006)

Evaluation of Twig Pattern Queries Based on Ordered Tree Matching. - Yangjun Chen; Donovan Cooke (SITIS, 2008)

XPath query evaluation based on the stack encoding. - Yangjun Chen; Donovan Cooke (C3S2E, 2009)