@ARTICLE\{IMM2005-03848,
    author       = "V. V. Vidal",
    title        = "What is {OR}?",
    year         = "2005",
    pages        = "4-8",
    journal      = "orbit",
    volume       = "",
    editor       = "",
    number       = "",
    publisher    = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/3848-full.html"
}