@inproceedings{lehmann2012,
	Author = {Müller-Birn, Claudia and Karran, Benjamin and Lehmann, Janette and Luczak-Rösch, Markus},
	Booktitle = {Proceedings of the International Symposium on Open Collaboration},
	Series = {OpenSym},
	Title = {Peer-production System or Collaborative Ontology Development Effort: What is Wikidata?},
	Year = {2015},
}