@inproceedings{SAT-2004-ChenD,
	author        = "Hubie Chen and Víctor Dalmau",
	booktitle     = "{Proceedings of the Seventh International Conference on Theory and Applications of Satisfiability Testing}",
	ee            = "http://www.satisfiability.org/SAT04/programme/91.pdf",
	pages         = "224--229",
	title         = "{Looking Algebraically at Tractable Quantified Boolean Formulas}",
	year          = 2004,
}