@inproceedings{SIGMOD-1991-KemperKM,
	author        = "Alfons Kemper and Christoph Kilger and Guido Moerkotte",
	booktitle     = "{Proceedings of the 21st ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD91/P258.PDF",
	doi           = "10.1145/115790.115833",
	pages         = "258--267",
	title         = "{Function Materialization in Object Bases}",
	year          = 1991,
}