@inproceedings{SAC-2011-JeffersonMP,
	author        = "Christopher Jefferson and Wendy Moncur and Karen E. Petrie",
	booktitle     = "{Proceedings of the 26th Symposium on Applied Computing}",
	doi           = "10.1145/1982185.1982383",
	editor        = "William C. Chu and W. Eric Wong and Mathew J. Palakal and Chih-Cheng Hung",
	isbn          = "978-1-4503-0113-8",
	pages         = "907--912",
	publisher     = "{ACM}",
	title         = "{Combination: automated generation of puzzles with constraints}",
	year          = 2011,
}