title: champagne : data change propagation for heterogeneous information systems. authors: holger meinecke , uwe heinkel , ralf rantzau , carmen constantinescu. venue: vldb. year: 2002
title: infoharness : a system for search and retrieval of heterogeneous information. authors: leon shklar , amit sheth , vipul kashyap , satish thatte. venue: international conference on management of data. year: 1995