
@conference {inp:LovatPretschner2011,
	title = {{Data-centric multi-layer usage control enforcement: a Social Network Example}},
	booktitle = {Proceedings of the 16th ACM symposium on Access control models and technologies (SACMAT 2011)},
	year = {2011},
	author = {E. Lovat and A. Pretschner}
}
