@Inproceedings{kroetzsch2011sydsupftsw, author = "Markus Kr{\"o}tzsch and Sebastian Speiser", booktitle = "Proceedings of the 10th International Semantic Web Conference (ISWC?11)", pages = "354--369", publisher = "Springer", title = "ShareAlike Your Data: Self-referential Usage Policies for the Semantic Web", year = "2011", }