Haase, OliverOliverHaase0000-0002-5074-3254Henrich, AndreasAndreasHenrich2019-09-192015-07-131999978-3-540-66485-7978-3-540-48252-9https://fis.uni-bamberg.de/handle/uniba/36031engA closed approach to vague collections in partly inaccessible distributed databasesconferenceobject10.1007/3-540-48252-0_20