title: a layered architecture for querying dynamic web content. authors: hasan davulcu , michael kifer , i. v. ramakrishnan , juliana freire. venue: sigmod conference. year: 1999
title: a layered architecture for querying dynamic web content. authors: hasan davulcu , juliana freire , michael kifer , i. v. ramakrishnan. venue: international conference on management of data. year: 1999