@inproceedings{STOC-1972-NievergeltR,
	author        = "Jürg Nievergelt and Edward M. Reingold",
	booktitle     = "{Proceedings of the Fourth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800152.804906",
	pages         = "137--142",
	publisher     = "{ACM}",
	title         = "{Binary Search Trees of Bounded Balance}",
	year          = 1972,
}