@phdthesis{
    HUT-TCS-A64,
    author = "Aura, Tuomas",
    institution = "Helsinki University of Technology, Department of Computer Science and Engineering, Laboratory for Theoretical Computer Science",
    title = "Authorization and Availability - Aspects of Open Network Security",
    year = "2000",
    number = "A64",
    month = "November",
    note = "Doctoral dissertation",
    address = "Espoo, Finland",
    owner = "MM",
    type = "Research Report",
    pages = "42"
}