@inproceedings{SIGIR-1971-Jackson,
	author        = "David M. Jackson",
	booktitle     = "{Proceedings of the ACM SIGIR Information Storage and Retrieval Symposium}",
	cdrom         = "SIGIR1971/P217.pdf",
	doi           = "10.1145/511285.511309",
	pages         = "217--224",
	publisher     = "{ACM}",
	title         = "{Optimal Classification and Its Consequences}",
	year          = 1971,
}