@ARTICLE\{IMM2007-05002,
    author       = "T. Bolander and J. Hansen and M. R. Hansen",
    title        = "Decidability of a hybrid duration calculus",
    year         = "2007",
    month        = "jun",
    pages        = "113-133",
    journal      = "Electronic Notes in Theoretical Computer Science",
    volume       = "174",
    editor       = "",
    number       = "6",
    publisher    = "Elsevier",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/5002-full.html"
}