@inproceedings{STOC-1971-Berry,
	author        = "Daniel M. Berry",
	booktitle     = "{Proceedings of the Third Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800157.805041",
	pages         = "86--100",
	publisher     = "{ACM}",
	title         = "{Block Structure: Retention or Deletion?}",
	year          = 1971,
}