@inproceedings{STOC-2002-Hallgren,
	author        = "Sean Hallgren",
	booktitle     = "{Proceedings of the 34th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/509907.510001",
	isbn          = "1-58113-495-9",
	pages         = "653--658",
	publisher     = "{ACM}",
	title         = "{Polynomial-time quantum algorithms for Pell’s equation and the principal ideal problem}",
	year          = 2002,
}