RonPub UG (haftungsbeschränkt) http://www.ronpub.com Ralf Möller Simon Schiff Özgür L. Özcep Ontology-Based Data Access to Big Data 21-32 2019 Open Journal of Databases (OJDB) 6 6 http://nbn-resolving.de/urn:nbn:de:101:1-2018122318334350985847 https://www.ronpub.com/ojdb/OJDB_2019v6i1n03_Schiff.html https://www.ronpub.com/OJDB_2019v6i1n03_Schiff.pdf