@inproceedings{SIGMOD-1975-SchneiderS,
	author        = "L. S. Schneider and C. R. Spath",
	booktitle     = "{Proceedings of the Fifth ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD75/P167.PDF",
	doi           = "10.1145/500080.500105",
	pages         = "167--185",
	publisher     = "{ACM}",
	title         = "{Quantitative Data Description}",
	year          = 1975,
}