@inproceedings{ASE-2012-ChenK,
	author        = "Ning Chen and Sunghun Kim",
	booktitle     = "{Proceedings of the 27th IEEE/ACM International Conference on Automated Software Engineering}",
	doi           = "10.1145/2351676.2351697",
	isbn          = "978-1-4503-1204-2",
	pages         = "140--149",
	publisher     = "{ACM}",
	title         = "{Puzzle-based automatic testing: bringing humans into the loop by solving puzzles}",
	year          = 2012,
}