@inproceedings{SIGMOD-1995-GriffinL,
	author        = "Timothy Griffin and Leonid Libkin",
	booktitle     = "{Proceedings of the 25th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD95/P328.PDF",
	doi           = "10.1145/223784.223849",
	pages         = "328--339",
	publisher     = "{ACM Press}",
	title         = "{Incremental Maintenance of Views with Duplicates}",
	year          = 1995,
}