@inproceedings{STOC-1989-CookU,
	author        = "Stephen A. Cook and Alasdair Urquhart",
	booktitle     = "{Proceedings of the 21st Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/73007.73017",
	isbn          = "0-89791-307-8",
	pages         = "107--112",
	publisher     = "{ACM}",
	title         = "{Functional Interpretations of Feasibly Constructive Arithmetic}",
	year          = 1989,
}