@inproceedings{SAC-2000-TryfonaJ,
	author        = "Nectaria Tryfona and Christian S. Jensen",
	booktitle     = "{Proceedings of the 15th Symposium on Applied Computing}",
	pages         = "313--322",
	publisher     = "{ACM}",
	title         = "{Using Abstractions for Spatio-Temporal Conceptual Modeling}",
	volume        = 1,
	year          = 2000,
}