@inproceedings{SIGMOD-1981-Batory,
	author        = "Don S. Batory",
	booktitle     = "{Proceedings of the 11th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD81/P030.PDF",
	doi           = "10.1145/582318.582323",
	pages         = "30--39",
	publisher     = "{ACM Press}",
	title         = "{B+ Trees and Indexed Sequential Files: A Performance Comparison}",
	year          = 1981,
}