title: lockx : a system for efficiently querying secure xml. authors: sungran cho , laks v. s. lakshmanan , divesh srivastava , sihem amer-yahia. venue: sigmod conference. year: 2003
title: lockx : a system for efficiently querying secure xml. authors: sungran cho , sihem amer-yahia , laks v. s. lakshmanan , divesh srivastava. venue: international conference on management of data. year: 2003