@inproceedings{POPL-2011-BirkedalRSSTY,
	author        = "Lars Birkedal and Bernhard Reus and Jan Schwinghammer and Kristian Støvring and Jacob Thamsborg and Hongseok Yang",
	booktitle     = "{Proceedings of the 38th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/1926385.1926401",
	editor        = "Thomas Ball and Mooly Sagiv",
	isbn          = "978-1-4503-0490-0",
	pages         = "119--132",
	publisher     = "{ACM}",
	title         = "{Step-indexed kripke models over recursive worlds}",
	year          = 2011,
}