RonPub UG (haftungsbeschränkt) http://www.ronpub.com Sven Groppe Dennis Heinrich Stefan Werner Distributed Join Approaches for W3C-Conform SPARQL Endpoints 30-52 2015 Open Journal of Semantic Web (OJSW) 2 2 http://nbn-resolving.de/urn:nbn:de:101:1-201705194910 https://www.ronpub.com/ojsw/OJSW_2015v2i1n04_Groppe.html https://www.ronpub.com/OJSW_2015v2i1n04_Groppe.pdf