@inproceedings{QAPL-2011-SeidelV,
	author        = "Daniel Seidel and Janis Voigtländer",
	booktitle     = "{Proceedings of the Ninth Workshop on Quantitative Aspects of Programming Languages}",
	doi           = "10.4204/EPTCS.57.7",
	pages         = "89--103",
	series        = "{EPTCS}",
	title         = "{Improvements for Free}",
	volume        = 57,
	year          = 2011,
}