@inproceedings{SIGMOD-1990-GyssensPG,
	author        = "Marc Gyssens and Jan Paredaens and Dirk Van Gucht",
	booktitle     = "{Proceedings of the 20th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD90/P024.PDF",
	doi           = "10.1145/93597.93616",
	pages         = "24--33",
	title         = "{A Graph-Oriented Object Model for Database End-User Interfaces}",
	year          = 1990,
}