@inproceedings{VLDB-1998-HelmerWM,
	author        = "Sven Helmer and Till Westmann and Guido Moerkotte",
	booktitle     = "{Proceedings of the 24th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1998/p098.pdf",
	isbn          = "1-55860-566-5",
	pages         = "98--109",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Diag-Join: An Opportunistic Join Algorithm for 1:N Relationships}",
	year          = 1998,
}