@inproceedings{STOC-1990-Poutre,
	author        = "Johannes A. La Poutré",
	booktitle     = "{Proceedings of the 22nd Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/100216.100221",
	isbn          = "0-89791-361-2",
	pages         = "34--44",
	publisher     = "{ACM}",
	title         = "{Lower Bounds for the Union-Find and the Split-Find Problem on Pointer Machines}",
	year          = 1990,
}