title: template-based wrappers in the tsimmis system. authors: j hammer , h garcia-molina , s nestorov , r yerneni , m breunig , v vassalos. venue: sigmod conference. year: 1997
title: vassalos . templatebasedwrappers in the tsimmis system. authors: j hammer , s nestorov , h garcia-molina , r yerneni ,. venue: proc . acm sigmod conference ,. year: nan