@inproceedings{POPL-1977-Clarke,
	author        = "Edmund M. Clarke",
	booktitle     = "{Conference Record of the Fourth Symposium on Principles of Programming Languages}",
	cdrom         = "POPL/00001426.PDF",
	doi           = "10.1145/512950.512952",
	editor        = "Robert M. Graham and Michael A. Harrison and Ravi Sethi",
	pages         = "10--20",
	publisher     = "{ACM}",
	title         = "{Programming Language Constructs for Which it is Impossible to Obtain “Good” Hoare-Like Axiom Systems}",
	year          = 1977,
}