@inproceedings{STOC-1972-Hamlet,
	author        = "Richard G. Hamlet",
	booktitle     = "{Proceedings of the Fourth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800152.804914",
	pages         = "193--197",
	publisher     = "{ACM}",
	title         = "{A Patent Problem for Abstract Programming Languages: Machine-Independent Computations}",
	year          = 1972,
}