@inproceedings{SIGMOD-1989-AbiteboulK,
	author        = "Serge Abiteboul and Paris C. Kanellakis",
	booktitle     = "{Proceedings of the 19th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD89/P159.PDF",
	doi           = "10.1145/67544.66941",
	pages         = "159--173",
	title         = "{Object Identity as a Query Language Primitive}",
	year          = 1989,
}