@inproceedings {4995,
	title = {Logical Data Expiration for Fixpoint Extensions of Temporal Logics},
	booktitle = {International Symposium on Spatial and Temporal Databases (SSTD)},
	year = {2003},
	doi = {10.1007/978-3-540-45072-6_22},
	author = {David Toman}
}
