@Article{Koz00,
    Author       = "Kozen, D.",
    Year         = "2000",
    Title        = "{On Hoare Logic and Kleene Algebra with Tests}",
    Journal      = "ACM Transactions on Computational Logic",
    Volume       = "1",
    Number       = "1",
    Pages        = "60-76",
    Comment      = "TPTPRef"
}