@CONFERENCE\{IMM1998-01870,
    author       = "A. Haxthausen and X. Yong",
    title        = "A {RAISE} Specification Framework and Justification Assistant for the Duration Calculus",
    year         = "1998",
    pages        = "51-58",
    booktitle    = "Proceedings of {ESSLLI-}98 Workshop on Duration Calculus",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1870-full.html"
}