Advances in Databases and Information Systems Third East European Conference, ADBIS'99, Maribor, Slovenia, September 13-16, 1999, Proceedings - Eder, Johann; Eder, Johann; Rozman, Ivan; Rozman, Ivan; Welzer, Tatjana; Welzer, Tatjana (Springer Berlin Heidelberg : Imprint: Springer, 1999)