@inproceedings{SAC-1996-Hartley,
	author        = "Stephen J. Hartley",
	booktitle     = "{Proceedings of the 11th Symposium on Applied Computing}",
	doi           = "10.1145/331119.331192",
	pages         = "277--281",
	publisher     = "{ACM}",
	title         = "{Steiner systems and the Boolean satisfiability problem}",
	year          = 1996,
}