SOFTWARE TOOLS FOR NAVIGATION IN DOCUMENT DATABASES - Development of Information Navigation Service Based on Classification Schemes Topics: Databases and Datawarehouses; Digital Libraries; Metadata and Metamodeling; Ontology and the Semantic Web; Searching and Browsing; System Integration; Web Services and Web Engineering; XML and Data Management In Proceedings of the Third International Conference on Web Information Systems and Technologies - Volume 1: WEBIST, 455-458, 2007 , Barcelona, Spain