@inproceedings{SIGMOD-1991-VandenbergD,
	author        = "Scott L. Vandenberg and David J. DeWitt",
	booktitle     = "{Proceedings of the 21st ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD91/P158.PDF",
	doi           = "10.1145/115790.115811",
	pages         = "158--167",
	title         = "{Algebraic Support for Complex Objects with Arrays, Identity, and Inheritance}",
	year          = 1991,
}