@ARTICLE\{IMM2001-0708,
    author       = "F. Nielson and H. Riis Nielson and M. Sagiv",
    title        = "Kleene's Logic with Equality",
    year         = "2001",
    pages        = "131-137",
    journal      = "Information Processing Letters",
    volume       = "80",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/708-full.html"
}