@inproceedings{TLCA-2007-Berardi,
	author        = "Stefano Berardi",
	booktitle     = "{Proceedings of the Eighth International Conference on Typed Lambda Calculi and Applications}",
	doi           = "10.1007/978-3-540-73228-0_4",
	isbn          = "978-3-540-73227-3",
	pages         = "23--38",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Semantics for Intuitionistic Arithmetic Based on Tarski Games with Retractable Moves}",
	volume        = 4583,
	year          = 2007,
}