title: from tree patterns to generalized tree patterns : on efficient evaluation of xquery. authors: z chen , h jagadish , l lakshmanan , s paparizos. venue: vldb. year: 2003
title: from tree patterns to generalized tree patterns : on efficient evaluation of xquery. authors: zchvjlvs lakshmanan , s paparizos. venue: proceedings of the 29th very large data base conference ,. year: nan