@inproceedings{SIGMOD-2007-ElhemaliGGJ,
	author        = "Mostafa Elhemali and César A. Galindo-Legaria and Torsten Grabs and Milind Joshi",
	booktitle     = "{Proceedings of the 25th ACM SIGMOD International Conference on Management of Data}",
	doi           = "10.1145/1247480.1247598",
	isbn          = "978-1-59593-686-8",
	pages         = "993--1004",
	publisher     = "{ACM}",
	title         = "{Execution strategies for SQL subqueries}",
	year          = 2007,
}