@inproceedings{STOC-1976-HartmanisB,
	author        = "Juris Hartmanis and Leonard Berman",
	booktitle     = "{Proceedings of the Eighth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800113.803628",
	pages         = "30--40",
	publisher     = "{ACM}",
	title         = "{On Isomorphisms and Density of NP and Other Complete Sets}",
	year          = 1976,
}