@inproceedings{FDG-2013-SmithBP,
	author        = "Adam M. Smith and Eric Butler and Zoran Popovic",
	booktitle     = "{Proceedings of the Eighth International Conference on the Foundations of Digital Games}",
	ee            = "http://www.fdg2013.org/program/papers/paper29_smith_etal.pdf",
	isbn          = "978-0-9913982-0-1",
	pages         = "221--228",
	publisher     = "{Society for the Advancement of the Science of Digital Games}",
	title         = "{Quantifying over play: Constraining undesirable solutions in puzzle design}",
	year          = 2013,
}