@article{TAPSOFT-J-1995-Kozen96,
	author        = "Dexter Kozen",
	doi           = "10.1016/0304-3975(96)00070-9",
	issn          = "0304-3975",
	journal       = "{Theoretical Computer Science}",
	number        = "1&2",
	pages         = "73--94",
	title         = "{Rational Spaces and Set Constraints}",
	volume        = 167,
	year          = 1996,
}