@inproceedings{STOC-1973-Constable,
	author        = "Robert L. Constable",
	booktitle     = "{Proceedings of the Fifth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800125.804041",
	pages         = "108--121",
	publisher     = "{ACM}",
	title         = "{Type Two Computational Complexity}",
	year          = 1973,
}