@inproceedings{STOC-1983-Young,
	author        = "Paul Young",
	booktitle     = "{Proceedings of the 15th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800061.808770",
	pages         = "392--401",
	publisher     = "{ACM}",
	title         = "{Some Structural Properties of Polynomial Reducibilities and Sets in NP}",
	year          = 1983,
}