title: semistructured und structured data in the web : going back and forth sigmod record. authors: paolo merialdo , giansalvatore mecca , paolo atzeni. venue: nan. year: 1997.0
title: qursed : querying and reporting semistructured data international conference on management of data. authors: yannis papakonstantinou , michalis petropoulos , vasilis vassalos. venue: nan. year: 2002.0