@PHDTHESIS\{IMM2005-05234,
    author       = "I. L. G{\o}rtz",
    title        = "Topics in Algorithms: Data Structures on Trees and Approximation Algorithms on Graphs",
    year         = "2005",
    month        = "jul",
    school       = "{IT} Univeristy of Copenhagen",
    address      = "",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/5234-full.html"
}